CBR is the greatest resort. You will love it. Jamaica is a very good choice, transportation-wise. Although not next to the main pool/food court, is it a lovely location in the resort and the walk to the main area is only about 5 minutes. You go across a bridge and get to take in some very nice scenery on the way. I personally enjoy the walk and prefer this area--either Jamaica or Aruba near the bridge. Martinique is good if you need to be closest to the food court--like maybe if you have very small children. (but then you miss the beautiful walk!)
In addition to the main pool, all the "island" locations have their own invididual quieter, unthemed pool if you don't feel like going the 5 minute distance.
I honestly don't know why everyone makes such a big deal of the size of this resort. From even the farthest out location, it is no more than a 10-15 minute walk to the food court area, and the farther out you are, the better and more views you get on the way in! Plus, if you are far out, it is almost like being on a very private island! So maybe couples might enjoy those areas.