We recently took back to back tours (Eastern and Western Carribean) on The Triumph's sister ship The Victory. We had a ball, and the service was superb. We paid our gratuities up front, which proved to be cheaper than having them posted on our Sail and Sign cards.
Cosumel was wonderful, Go to Chakanabba Park the kids will love the beautifull beach and safe snorkelling. Also, don't miss swimming with the Dolphins there...it's a must. We prebooked via the web and took a taxi from the port. (Much cheaper that the Cruise Tour) The ship does not offer the Swim programme, but by booking direct we were able to.
Grand Caymen was just a beautifull, however the Turtle Farm was disappointing as this seemed cruel and the turtles were in such cramped conditions, I felt quite sorry for them.
Hell is OK for a post office.
Go to Turtle Beach and take Captain Vincent's boat out to the reef for some safe and terrific snorkel sights. He charges approx 20 dollars for the trip out to the reef and an hours snorkel, then he will drop you off at the cruise pier right next to your ship. He also picked fruit from the trees on the beach for us to eat, and explained all about the Island and it's history.
Ocho Rios, Don't take any notice of the Cruise lines advice on not going ashore unless with a tour. Rubbish!! The people were great and very obliging, we found a local who could not do enough for us, we went to Dolphin Cove and he bought us drinks all day long, and also picked fruits from the rain forrest for us, along with sugar cane and frozen coconut (at no cost) he also gave me a handfull of shells and corals as we left as a gift. (dead of course, don't stand on or touch the live corals)
We had a great day and it cost half the price of the cruise tour.