If you’re a bit more on the timid side, you can always use Yelp and TripAdvisor to get good insights on places people have visited. As a disclaimer, some of the ratings may not be accurate on these sites, so make sure you go through and read some of the more recent reviews that people have written. We did this for a few of the places we visited and had no issues.
Early December is the end of the rainy season in those areas. The storms tend to be short by that time, but still you will probably get a few quick downpours a week. I’m not an expert on getting around in the Philippines, though I do know that it’s rarely fast or easy. If you want a place to relax then Boracay Island might be the best. Sorry I couldn’t be of more help. -Roger
Another reason to consider Dubai is that the busy airport has cheap non-stop flights coming in from almost every major airport in Europe and Asia. As a result it's popular to book long weekend trips of 3 or 4 days to Dubai, where you can enjoy some sunshine and shopping before flying back home where it gets colder by the day. You might also consider stopping for a few days in Dubai and then moving onto somewhere else with cheap direct flights such as the Maldives.
The biggest single highlight in the region is the Angkor Wat temples near Siem Reap in Cambodia. It’s one of the most impressive tourist sights in the entire world, and Siem Reap is a fun and mellow town that you can linger in for a while. Vietnam is really lovely and cheap as well. The food there is excellent, as it’s a fusion of French and traditional Asian. You can go from Ho Chi Minh City in the south on the train to Hoi An near Da Nang, and then up to Hanoi to see Halong Bay. I wouldn’t start in Vietnam because it can be a bit trickier than the others. In the rest of the region it’s easy to book tours and buses and such, but in Vietnam the travel agencies are a bit harder to trust, so you have to be more careful. Things there are very cheap though, so even if you pay more for a reputable agency, it’ll still be cheap.
If you crave warmth but think the beach bores you, head to the Southwestern United States. New Age meets Old West in Santa Fe, Phoenix is still toasty and its cultural season is in full swing, and Denver makes for a great trip. And if you've never seen the Grand Canyon, winter is a good time to visit since the crowds have thinned out (but do dress warmly).
Either way, my favorite warm-weather destinations near North America are San Juan, Puerto Rico, Playa del Carmen, Mexico, and Puerto Vallarta, Mexico. All 3 of them have very interesting towns that are also on lovely beaches so you have nightlife and culture mixed with beaches and water sports and whatnot. You might get low 30s for daytime highs in October, but it cools off in the evenings and it’s pretty nice. Let me know how that sounds and if you have other ideas I can add more information if you like. -Roger
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.
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!
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.
Two of the easier other choices would be London or Madrid. From Amsterdam you can take a train to Brussels and then change for the Eurostar train to London, or you can fly. From London to Barcelona you’d want to fly for sure. If you chose Madrid you can go to Amsterdam and then fly to Barcelona and then take a train from Barcelona to Madrid in only 2.5 hours.
Oh, did you want a sunny tropical vacation that doesn’t require a passport? Done. Hurricane season is over, flights are cheap, and the water is still warm enough for swimming (and scuba diving). Almost all the tourists come here via cruise ship, which means you’re mostly not competing with them for hotel rooms -- Windward Passage, Emerald Beach, and the Bolongo are all open for business after Hurricanes Irma and Maria last year. On December 16 you can catch Jazz By The Sea down at Coral World Ocean Park, and on December 21 watch the St. Thomas Lighted Boat Parade, where contestants (boats) are judged on lights, originality, and holiday cheer.
Mauritius would be an interesting option if you wanted to mainly stay in one place, which I think is typical on a honeymoon. Sri Lanka is fascinating and really nice, though most people who visit tend to tour around seeing some beach areas and some of the hills and jungles. So I’m not sure if it’s ideal if you want to just stay in one place. Kerala has some really nice resorts that are within easy reach of the backwater boat tours and other attractions.
If you didn’t want to go to Asia you could instead consider the ABC islands, which don’t get much rain and haven’t had a major storm in many decades. Aruba, Bonaire, and Curacao are known for good snorkeling as well and you’d get good hotel rates that time of year. Two weeks might be a long time to spend on those islands though, so I would go to Asia if you can. Late November is a perfect time of year for a visit there, and you can even include a few days in Siem Reap to visit Ankor Wat. Let me know if you have any other questions. -Roger
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.