Jim,
When we were on the Voyager, Capt. Dag arranged an impromptu motu day in Bora Bora. We took our scheduled jeep excrusion instead. Big mistake. Everyone who went reported a fantastic motu day and the video on TV proved it. Jeep safari was ok but we wish that we had cancelled and done the motu. Don't know about snorkeling equipment but with caviar and champagne bars floating in the water, who needs to look at fish? :D .

Wish we could find out if they will be planning one for the Mariner. It makes a difference in our excursion plans.