just a question Blonde - if you have been to the Carribean lots of times why then go to DR ? Cuba, Aruba etc are way ahead.
Be wary of your hotel in Punta Cana - some local hotels were bought over by hotel chains and we had the unfortunate experience of staying in a hotel while it was transfering to the new owners - think of a 2star (although advertised as a 4star) being upgraded to a 4star, not from a construction point of view but the basics - aircon in the room, standard facilities in the room, cleanliness of the pool etc.