We did the governors beach break. I had read that the beach directly near the cruise ship was very rocky so wanted to go somewhere else. The beach was nice, not the best I've been to but it was nice. This was basically a shuttle to the beach with the option to go snorkeling.
The dune buggy adventure was fun but too short for the amount of money in my opinion. I would definitly recommend taking a tour on this island, don't wander on your own.