We've had posts mention Nachi Cocum before, so no worries! As long as you are among the lucky 100 you are safe.
Another option to consider is
Passion Island, which you can go to on either a catamaran or a wild ride aboard a twister jet boat. We went there a few years ago and we had the entire place and just ~60 guests. It was very nice. It is all-inclusive at the time, but now has a cash bar.