We have nothing but praise for Captain Marvin's tours, they are great tours to start with, great people, very helpful. On our last cruise we had to cancel last minute, because my DH got a really bad sunburn and didn't want to be out in the sun on the water, all i did when we got to Caymen was to head ashore walk to their office, and tell them that we had to cancel and that was it, no problems whatsoever