If you are looking for beach weather in December then most of your list won’t work, and several of them are only on rivers. Starting from Kolkata you have many good choices that are much closer to you than anywhere in Europe or the Canary Islands, or the Caribbean for that matter. In fact, I’m a bit confused by your list because there are so many different types of places on it, many that aren’t warm or on beaches.
The rainy season in Belize doesn’t really end until early January, which is why it didn’t make the December list. Belize is definitely affordable enough to make this list and it appears for many of the following months. If you are thinking about going to Belize in December I think it’s a good choice. As you probably know, the Tropical rain patterns are such that the showers tend to come and go quickly, and they are often overnight. -Roger
Yes I have stayed in Bali for a month too, that place is really special I agree. I haven’t been to any other places that you mentioned above except for Any Dhabi and Dubai but I didn’t really explore or have cash to do anything really there. I have been to Singapore but only on transit. I hope to spend the next year in and around south east Asia teaching English, after April/May onwards. Inshallah!
Thailand is far more different and it’s easier to get around. The tourist areas are quite modern and well organized, and enough people speak English that it’s easy to do whatever you like. Again there you have choices of cooler areas in the north such as Chiang Mai, and of course Bangkok, as well as all of the islands. Let me know if you have any questions. -Roger
If I were you I’d fly into Bali and spend a couple days in the Kuta area to get your bearings and then head to Ubud, which is in the foothills and easily reached by shuttle bus. It’s also fairly crowded, but it’s still quite nice and there are scores of little spas and yoga places and that sort of thing. Then after a few days there, head up to the northern coastal town of Lovina, which is sort of like how Kuta was 25 years ago. It’s still only partly developed and there are still many open spaces, which is no longer true in the Kuta area. It’s cheaper than Kuta, and somewhat like Boracay in how mellow it is. You could also take a ferry from Bali to the island of Lombok, which is the next large one over. Things there are also more like Boracay and less chaotic than the Kuta area. Again, I really love Bali and still recommend it, but unless you are an Australian surfer, it’s best to stay somewhere other than the general Kuta area.
As Christmas approaches the city will fill up much more, so if you can go early in the month you'll be much better off. But even if you can't go before the last week of the month you'll still find Mexico City to be a tremendous bargain compared to pretty much anywhere else in North America. It's a great shopping destination, and not just for goofy souvenirs, so that's something to think about as well.
This country-style dish from vegetarian cooking icon Deborah Madison is delicate and delicious and makes a lovely side dish for turkey. The recipe calls for baking it for 50 minutes in a 375 degree oven, but the results can be achieved in a 325 oven – the temperature for most turkey recipes – so it can be baked at the same time as the bird (provided your oven is large enough). Just allow 60 to 70 minutes total baking time.
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
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 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.