We didn't do any excursions on this island. We only walked around the shops and beach, fun seeing all the different shops and by different shops I mean jewelery or liquor and cigarettes. Although due to island traffic the ship was delayed leaving for 2 hours so a couple could get back to the ship, luckily they had a cell phone that worked out there to call and tell the ship...another couple not so lucky and had to pay $1000+ to have a helicopter fly them to St. Thomas.
So much fun!!!!!!! This made our entire cruise worth it! You feel so safe doing it because they take you out in shallow water and have you go over emergency procedures that you learned in a class just 20 minute before. Only go to 25ft of water which was more than enough. I would recommend this to any and all of my friends!