Another honeymoon advice thread… (Dec-Feb beach vibes)

Hello! Yes, already searched, appreciate any extra help tho…

Details: our budget is ~5-6k all in (thinking 1500 flights, 3500 hotel/meals/etc) for a 3-5 night honeymoon…. Dec (Xmas week) or Feb 14th week, looking for any decent recs for a warm/beachy/relaxing spot, open to AI if needed, traveling from NE USA and hoping for flights under 12hrs. Mainly looking international but given budget would consider domestic if unique spot or something

We have already looked around at many islands and spots and just having a really hard time trying to make the budget work, as you can probably imagine, without making big sacrifices on quality

Looking for your specific recs of individual resorts to consider at this point, rather than more general recs of a country, but appreciate any advice on this

Thx in advance!