I started this thread and we just got back from our 10 day cruise on the MS Paul Gauguin yesterday. Overall it was the best cruise experience we have had. The service was exceptional, and the dive staff was great.
We managed to get in 11 dives, which is not live-aboard volume but good for a traditional cruise ship. The "marina" on the back of the boat was really convenient. Water temps were 78-79 degrees which was about 3 degrees colder than we have experienced on past trips. I wore my 3 mm full suit and was comfortable, while my wife wishes she had taken her vest along with her 3 mm. Most other divers used the boat's equipment including shorties, and were cold.