Wanting to do a snorkel excursion on Grand Cayman.
Have read good things about captain Marvin, but find the trip with Cayman Delight Cruises looking a little more interesting, starting one hour earlier to include lunch for the same price and stops as Captain Marvins.
Also the say the have ships for 10 - 20 pers. on a busy day and Capt. Marvin says 20-40.