If you have a flexible schedule, or if you just happen to have some time off in November, you are in luck. This is honestly the best month of the year for finding cheap destinations that also have fantastic weather. Since most people don't start their winter travel until mid or late December, it means crowds are small and hotel prices are low through huge sections of the travel world. Those wondering where to go on holiday in November have many great choices at bargain prices, although airfare may cost a bit.
Prices go up a bit when you go south into Malaysia, but it’s worth it if you’ve got the money. You might even consider Myanmar as well, which I’ve yet to visit, but I keep hearing great things about. It’s honestly the perfect time of year there. By April it’s insanely hot (the hottest month of the year), but December through February is lovely. It’s all quite safe as well, as long as you keep your wits about you. I’m happy to help with more information if you need it.
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.
Those who adore the holidays and don’t mind the cold (the average high is around 48 degrees) might consider an end-of-year trip across the pond. Arguably Europe’s most festive destination, December in London promises charming Christmas markets, show-stopping Christmas trees, and streets covered in twinkling lights. A number of posh hotels, like 45 Park Lane and The Dorchester even have Christmas-centric packages available to get you into the holiday spirit.
I too am a planner, which is how I got involved in this, and so I totally understand your motivation. I think your plan sounds quite good. The weather in the places you are planning is actually fairly mild, and none of them are too far north. For some of us it’s easy to forget how far north parts of Europe are, and in those areas it’s not so much the cold but the fact that the sun rises at 10am and sets at 3pm that time of the year.
Hotels in Buenos Aires are starting to reach their summer peak prices in November, especially toward the end of the month, but still they are a fantastic bargain by European or North American standards. The weather in November is also pretty much perfect, and while there's always a threat of rain in BA, it's mostly an indoor city so it shouldn't be too much of an inconvenience.
Aside from Indonesia you might also consider Thailand, which has great infrastructure so it’s much easier to travel with young children. Phuket has by far the most options, and its rainy season usually ends in early November. For families I recommend Kata Beach and Karon Beach, which are both just south of the main shopping and nightlife town of Patong Beach.
If you are aware of what you’re eating throughout the day, you can better plan for indulgences. When traveling to a place that is known for their cuisine, enjoy eating while remaining balanced about your diet. Instead of getting a sweet all to yourself, maybe share it with whoever you are going. By sampling small portions of food, instead of overeating till you feel sick, you can enjoy your vacation food while still keeping your Keto Diet in mind. Alternatively, be sure to get as much exercise as possible (walk to destinations instead of taking a bus or driving), and the extra exertion will help use up any extra calories (or carbs) that you may eat.
If you’ve got 5 to 7 days and are starting in India I don’t think you want to fly halfway around the world, so it’s probably best to go somewhere between Dubai and Bali. Dubai has cheap flights from most places and it’s very family oriented with large play parks inside shopping malls and that sort of thing. You could get an apartment there in one of the many apartment-hotels for a reasonable price, and the December weather should be pretty good as well.
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.”