Congratulations on your choice! Both are excellent hotels (I have stayed at CBR for many years, and visit Poly every trip) As far as room locations, I would recommend booking Jamaica in CBR, as it is closest to the bridge which takes you to Port Royal (a terrific place). Martinique (the one closest to Port Royale) is nice, but it might get noisy at night. Jamaica is great; we've stayed there for half-a-dozen trips. Don't miss any of the shops in Port Royale, swimming in the main pool, and checking out the birds and playground on Parrot Cay (the island in the middle of the lake which the bridges connect.) In Poly, the ceremonial house is terrific--check out all of the shops. Visit both pools (the new slide rocks!) Rent a boat from the marina, hang out on the beach, and be sure to take one of the boats which goes around the Seven Seas Lagoon. It's a great ride. Have a great vacation!