Thank you. I think Kauai, Cancun, and Costa Rica could all be good choices for you. You’ll be looking at the last month (more or less) of the rainy season in each of them, but in the Tropics that usually means at most a few quick thunderstorms per week that typically last only 30 minutes or so. Kauai would be the most expensive of the three, although the most beautiful as well, and the easiest to visit since Spanish isn’t necessary at all.
If you are mainly just looking to relax, you've found the perfect place, with warm weather and amazing off-season deals. The all-inclusive resorts tend to be much cheaper in the long run, although they do make it more difficult to experience the local culture and explore the whole island. If you don't care about leaving the resort and you want the best all-inclusive value in the Caribbean, head straight to Punta Cana, which is mentioned just below.
In addition to the obvious perks of pleasant weather and fewer tourists, off-season rates at accommodations are abundant. Voted No. 1 continental U.S. island by Travel + Leisure readers for the third time in 2018, Hilton Head has much to offer visitors. One of the most popular activities, perfect with autumn temperatures, is biking on the more than 60 miles of pathways covering the island, including along 12 miles of beaches. Bird watchers will keep busy spotting egrets, sandpipers, wood storks, sea gulls, pelicans, and ospreys. Well known as a golfer’s paradise, the Hilton Head Island area boasts more than 33 courses.
The easiest meal of the day to eat out is by far breakfast. Many places offer eggs, omelets, sausage, bacon, or other type of high-fat foods that are easy to order without too much effort. Dive bars or café’s will usually be quick to serve and have some great tasting food. We had the pleasure of eating breakfast at a great place called The 5 Point Café, which featured a fantastic omelet with smoked salmon (pictured below) and hollandaise sauce.
While the Caribbean destination tends to overflow with families during the holidays in December, go a month earlier and you’ll be treated to sunny days sans screaming kids, plus less expensive airfare. “November is my one my favorite months. The hustle and bustle of high season hasn't kicked in, average temperatures are in the 80’s, and the water temperature is lovely,” says Michael King-Hew, the proprietor of Kamalame Cay, a private island resort in the Bahamas. King-Hew specifically suggests for the resort's annual wellness retreat. “It’s the perfect way to get rested and in shape before the start of the hectic holiday season.”
November is a perfect time to visit Bermuda, with temperatures in the mid-70s and pink sand beaches that are less crowded than in high season. There are many ways to explore the 21-square-mile island, from under the sea where you can snorkel or dive among coral reefs or shipwrecks to the Bermuda Railway Trail, an 18-mile abandoned rail bed that winds through scenic landscapes and shorelines. The Crystal Caves take you into an underground world with a subterranean lake and white limestone stalagmites. The 36-acre Botanical Gardens, established in 1898, inspired John Lennon during a two-month Bermuda stay that led to his Double Fantasy album.

Pay homage to the Native American heritage of the U S of A by taking in the sights and sounds of Arizona’s capital city for pure rest and relaxation before the holiday season. Phoenix anchors a sprawling, multicity metropolitan area known as the Valley of the Sun, which is highly regarded for its luxury resorts, vibrant nightclubs, designer golf courses, and long lasting sunshine and warmth—even through the winter months. Attractions include the Heard Museum and the Pueblo Grande Museum & Archaeological Park. Be sure to check them out!
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.
Vietnam and Sri Lanka could both be excellent choices for what you have in mind. Both are best for people who already have experience in these sorts of places, which you do. Twelve days could be a perfect length of time for a classic tour of Vietnam, flying into Hanoi and spending a few days there and in Halong Bay (with a possible side trip up to Sapa), and then taking the train down to Denang for a quick transfer to Hoi An. Hoi An is really a wonderful place and 3 or 4 days there would be great. There are good beaches nearby as well. Then take the train down to Ho Chi Minh City for a few more days before flying home from there. You could also do a side trip to Nha Trang (wonderful beaches) or Dalat up in the mountains. Vietnam really is gorgeous and the food is wonderful (French influences remain) but it can be a bit complicated for new travelers because you’ll find that many people you meet are trying to hustle you a bit, particularly travel agents booking trips and tours. The hotels are generally honest and great value, and so are the restaurants. You’ll learn to ignore the annoying people quickly.
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.
Say Hydrated – This is a no-brainer and one of the most significant challenges for me. I never drink enough water, but it was hot this week in Florida when we were at Disney, and I could tell such a difference in how I felt when I was hydrated. I felt like it made it easier to stay strong and stick to eating low carb/keto as it helps to quench false hunger.

You mention New Zealand and of course it’s summer there then, so it would be a good choice. However, all of these places will be crowded and near peak hotel rates if they are warm. So I’ll be happy to give you advice if you tell me if you’d rather visit one or more European cities in the cold season, or if you are looking for a warm place like New Zealand where it will be fairly crowded. By the way, the southern European cities such as Rome and Barcelona are lively and enjoyable that time of year, as the Christmas season goes on, and there aren’t too many tourists except for a few that travel to see their families around the holidays. So it can be a good time for southern Europe, as long as you don’t mind wearing a jacket or jumper during the day, and maybe a bit more in the evening. Give me a bit more guidance and I’ll be happy to try to help. -Roger
×