planning a 3 week honeymoon from India to the other South East Asian countries in the month of December. Wanted a relaxing time with no fixed dates to travel but still want to see as much as the place offers.
Since it's your honeymoon and you may not want too many crowds, I'd suggest the "comparatively" lesser travelled parts of South-East Asia like Kota Kinabalu Cambodia Vietnam Laos and Indonesia. Since it's December, SE Asia would be teeming with tourists so it would be advisable to pre-plan and pre-book.
Mentioned in this answer: