Just did Captain Marvins last week and had a great time. The guides were great and we were the first ones on the sandbar. There were 12 in our boat but only 10 went in the water (plus the guides). We got to feed the stingrays and I even held one. Afterwards, they took us to a neat spot and we did some snorkeling. On the way back we waved at all of the overcrowded boats just heading out. I highly recommend Captain Marvins!!!