Honeymoon

We are very confused where to go. However, I know that we need to be deciding soon becasue it will be around Christmas time next year. Anyone have any suggestions? These are the requirements:

place has to be mostly honeymooners, lots of things to do, nightlife, some where in the caribean, beautiful room with some type of specialty thing (such as right on beach, or waterfall, etc.

Any suggestions will be greatly appreciated...:)