Since you’ve been to several of the top places in Asia already, and you love it, I think Bali might be your best bet. As I’ve written many times recently, I feel that the main tourist area of Kuta/Legian/Seminyak is just too crowded and overdeveloped to recommend, although it is interesting for a couple days and some nightlife. The arts and crafts town of Ubud is still nice, although also a bit crowded, but it’s not anything like a city so I still think you’d enjoy it.

From Atlanta, the places that come to mind with the theme of “nature” would be Costa Rica and Belize. Costa Rica is probably the better choice, as it famously has around a third of its land as natural parks. Much of it is jungle, and they have all sorts of activities including zip lining, but also canopy tours and much more. There is also the Arenal volcano there, which is really nice and has some fun hot springs around it. They also have beaches, of course, but there is plenty in the interior of the island to keep you busy. If you know a bit of Spanish, it helps, but most other visitors know little or none.
If you are looking for an all-inclusive resort with reasonable airfares from Chicagoland, your best bets will be in Punta Cana, Dominican Republic, or the Cancun/Playa del Carmen area. Both have everything on your list, except perhaps wild life, depending on how you define that. You can get cheaper flights into Cancun, and there is a wide variety of offerings once you are there. If you don’t think you want to leave the hotel much, then stay in the Cancun hotel district or along the Maya Riviera nearby. But if you want to interact with a real and lovely town, then stay in Playa del Carmen or over on Cozumel. There are many nearby activities and some very interesting ruins.
The high season hotel prices will start in November as well, but crowds are usually thin for most of the month so you should be able to get some nice bargains at some of the nicer places that allow online booking. When they see that they have lots of empty rooms as the month approaches, they'll discount to be on par with some of the 2-star places that aren't nearly as nice.
If the thought of another year crawling to a close has left you feeling a little low, November is the perfect time to give yourself a travel-fuelled lift, with an array of destinations primed for exploration during the penultimate month of the year. Trek in perfect conditions in Ethiopia and Nepal, visit Orlando’s theme parks at discount rates, sample an unusual Thanksgiving dinner in Puerto Rico or don your skeleton outfit for Día de Muertos in Mexico – trust us, the year is far from over!
Dubai has pretty much perfect weather in November, and this is really the first month since April when it's not scorching here. Fortunately, the crowds are also light because most people wait until Christmas to start traveling to warmer places. Dubai can be incredibly expensive if you have a big budget, but it doesn't have to be. You can get good deals on non-chain hotels and even apartment hotels this month, and if you skip the hotel restaurants and the fancier places in malls, you can eat well on a modest budget here.
I’m hearing very mixed things about Cuba visits. The main downside for Americans is that you still have to go as part of a package deal, and those packages are all incredibly expensive for what you get. It sounds like the Cuban government is charging very high taxes and fees on companies selling tours to Americans, so they are really only popular among people who are especially curious about visiting Cuba. In other words, they are poor value unless it’s at the top of your list already. I hope this helps. Let me know if you have any other questions. -Roger

If you can, try to stay at a hotel or hostel that has a kitchen which guests are allowed to use. You can also elect to find home-share style lodgings, as people often rent out their homes during peak vacation times for tourists to use. Once you have a kitchen, you have control over what you purchase and what you eat. An added benefit of this style of travel, other than the fact that you can stick to your Keto Diet effectively, is that you get to experience the local side of life. Going to grocery stores, choosing from local ingredients, and cooking for yourself will help make you feel like you’re a part of the culture, instead of only a visitor.
Overall this is a perfect time of year to visit almost anywhere in Argentina. When December arrives things really start filling up and all the locals are on their own holidays, so November is the ideal mix of great weather that isn't too steamy, and modest crowds and prices. With Argentina's recent inflation and currency devaluation, it can be hard to know how expensive this trip will be, but for most people it will be cheaper than in recent years.
This is a really interesting question. If you want to avoid crowds then you have already figured out that it’s best to avoid Honolulu and I would avoid Oahu completely. The Big Island is very interesting because of the volcano and some of the other scenery, but the most beautiful islands are Maui and Kauai. I haven’t made it to Kauai yet, but everyone I know has been there and they swear it’s the most photogenic, which looks right based on the photos I’ve seen. Maui is also really gorgeous and all islands other than Oahu are uncrowded even in high season. I drove all over Maui in a rental car and loved it and I don’t think there is as much to see on Kauai. So either of those will be great choices and the weather should be almost perfect in December with warm (but not scorching) temperatures and almost no rain. Have a great trip and let me know if you have any other questions. -Roger

Few people travel between Thanksgiving and Christmas—specifically, from the Tuesday after Thanksgiving to the Thursday or Friday before the peak Christmas rush—so you can enjoy substantial savings off peak-season rates (four nights for the price of three, seven nights for the price of five) and your chances of an upgrade are good—if you book through a Caribbean specialist with clout.
Unsurprisingly, the end of December is the beginning of the peak season for resort prices, so those who are able to come earlier in the month will be getting better deals. Still, the all-inclusive resorts are locked in heavy competition all year so this area can be a great deal compared to the alternatives, even in high season. If you are looking for where to go in December for an all-inclusive beach holiday, this is your best option for most people.
The last suggestion would be to start in Bangkok, which is an amazing city even if you avoid the Khosan Road party area, and then head south along the coast and into Malaysia and finally Singapore if you feel like it. There are many nice beaches and islands in Thailand that aren’t filled with party folks, and some really interesting places in Malaysia as well. George Town on Penang is really nice with excellent food, and Kuala Lumpur is my favorite city in Asia for few reasons. The town of Malacca is really nice, and Singapore is amazing, if a bit expensive.
Regarding Thailand, I’m not familiar with any islands that are beautiful and not touristy. Phuket has beaches all over the island and many of them are isolated so the only guests are those staying at the resort in front of them. If you search other travel sites, including travelfish.org, which I think is the best site for southeast Asia and it’s run by a friend of mine, you can find more information about more obscure Thai islands. One challenge could be that you might have to take two or three total flights and then a ferry ride to reach them.
The idea of holidaying in a country where the depths of winter are approaching may seem a little counter intuitive but stick with us. The aurora borealis, or Northern Lights, is the best light show on Earth, and a trip to Iceland in November is the perfect ticket to see them. Explore thermal geysers, stunning waterfalls, and epic glaciers by day then stay up late and watch the skies dance with green light by night. Just make sure you pack your thermals though – the average day time temperature only reaches highs of 4c (40F)!
Lovers of historic architecture should consider tiny Malta in November, which still basks in glorious warm weather as much of Europe starts to shiver. The baroque palaces, churches and fortifications of its harbour-hugging capital Valletta look much the same as they did 400 years ago, and are extra lovely when observed from a traditional dghajsa (open boat) water taxi. If a life on the high seas has always appealed, then charter a course for the Cayman Islands come November, when the serene Caribbean isle hosts Pirate Week, a fun-filled festival that includes costume contests, street dancing and a horde of swashbucklers ‘invading’ the island and capturing the governor.
From England I would say your cheapest and best late December destination with warm weather and reasonable prices is going to be Phuket. There are some other Thai islands that might be a bit cheaper, but they would be more complicated to reach, and they’d have fewer activities for the boys. Here are some Phuket resorts good for families. You can see that the price range is wide from cheapest to most expensive. In late December it’s peak season so you’ll pay at or near the top of those ranges.
“November in the desert evokes similar feelings in our hearts as springtime does for most of the world,” says Palm Springs-based Chef Michael Beckman, whose restaurants Workshop and Truss & Twine are among some of the city’s most popular hotspots. “We can set back out hiking, cycling, dining al fresco—all the things that make this place iconic—while the rest of the country is steeped in winter storms.” The Parker, The Colony Palms, and L’Horizon are generally considered the area’s top hotels, but design enthusiasts will relish the chance to stay in one of the area's signature Mid-Century Modern homes (AirBnB has hundreds available.) One thing not to miss: dinner and dancing at Melvyn’s, the beloved Old Hollywood haunt that counts Frank Sinatra, Elvis, and Marilyn Monroe as some of its famous regulars.
If you wanted to spend maybe 7 days outside of Singapore, I think I’d do 2 or 3 in Malaysia and then the rest in Thailand. Bangkok is another huge city but it’s also somewhat exotic compared to the other two, and much cheaper as well. Or if you wanted to spend some time on a beach you could instead go to one of Thailand’s islands. Phuket is the easiest to reach, but it’s not very interesting. Kho Phi Phi or Kho Samui are probably better choices because they really feel like islands (Phuket is more of a peninsula) and there is still plenty to do.

Lastly, while you’re stocking up on your morning coffee or mid-morning snack, you can many times see hard boiled eggs, snack-size cheeses, and small packs of nuts available in the display cases. While this is common in gas stations and convenience stores, more and more coffee shops and cafés are offering elevated versions of these as well. These are a quick and easy way to get some keto food while you’re sightseeing or running to a meeting.

If you are really only going for 4 or 5 days you only have time to visit one or maybe two cities anyway. I’d say that Lisbon would be ideal and you’d have time also for a short visit to Porto or the Algarve in the south, or at least the historic small town of Sintra, which is near Lisbon. Lisbon has fantastic weather for Europe and it’s a lovely city with plenty to see and do.
By the time November rolls around, Cancun has pretty much perfect weather for anyone. The heat of summer and early autumn has turned into a tropical warmth that is usually accompanied by pleasant breezes so it's lovely all day and all evening. The peak season doesn't start until late December so this is the perfect time to visit when rates are still nearly at their summer lows.
Lastly, while you’re stocking up on your morning coffee or mid-morning snack, you can many times see hard boiled eggs, snack-size cheeses, and small packs of nuts available in the display cases. While this is common in gas stations and convenience stores, more and more coffee shops and cafés are offering elevated versions of these as well. These are a quick and easy way to get some keto food while you’re sightseeing or running to a meeting.
If those flights are too expensive you might think about going somewhere else in Mexico or to Costa Rica. The area around Cancun including Playa del Carmen and Tulum and Cozumel has a LOT going on. And if you’ve been there you could instead go to the Puerto Vallarta area, which is very different and also great. For activities though it’s hard to beat Costa Rica. I think they invented zip-lining and the country is about one-third national parks with all kinds of fun activities. Let me know if you have any other questions. -Roger 
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