Thanks. We've been on one other cruise, and it was Holland America. We ended up booking our own snorkel trip which worked out about half the price and was a much smaller group. So I'll probably do the same for this one, though it would be fun to do a large trip with a whole bunch of women. I did contact the best rated snorkel trip on Tripadvisor (snorkel Bob) but he said he's already fully booked for that day. It looks like there are several other outfits who do shorter snorkel trips. The snorkel trip I did at Turks and Caicos was one of the highlights of the cruise.