Purchased the Go Oahu Pass from Leisure Travel Services. Kaimana Tours offered the snorkeling and shuttle option with additional rentals. The additional rentals were terrific! I rented the ninja mask, 3 valves, 2 body boards and 3 prs of flippers. It was alot but I didn't want my two sons not to have fun. One of my sons wasn't able to use the regular snorkel, so he switched to the ninja mask that worked excellently! I also rented 3 lifevests and I wouldn't have been able to go in without one. They ended up not using the body boards or lifevests, but I used the body boards to store all our items on and lay out on. I still got my money's worth. We all felt spoiled and enjoyed ourselves to the fullest!