Winter Escape

I am planning a trip for us. By "us" I mean, Jon and I, or all of us...I am undecided! We are thinking Mexico, Cuba or Dominican Republic. Any thoughts? All-inclusive seems like a good way to go, especially since what you pay upfront is what you pay. That makes budgeting simple and stress-free. If we were to bring the kids, Jack is free. That is awesome, plus he is at a good age to hang out on the beach and play in the sand (or eat it), and loves to swim. Julia would absolutely love it, and there are usually kids clubs for kids her age. If only Jon and I were to go it would be a great week for the 2 of us to relax and have some peace and quiet...but I do think I would be wishing we took the kids with us once we got there- well, maybe after a day or two of rest! We have the advantage of being able to go last minute with Jon's work so I am wondering if we should wait for a slow work period and then just book and go. Anyway, I am mostly looking for opinions on where to go...please offer any thoughts or experiences with or without kids!