Both my wife, and I are Carnival "Diamond", so we've been aboard, and sailed almost all the Carnival fleet. We found "Conquest" to have the most accommodating, and friendliest crew we've ever sailed with. Always smiling, and apparently very happy to do their job. I'm sure this comes directly down from the top brass aboard.
Food was good, but not as good as it once was. Dining room service was good, but once again, not as good as it used to be.
Shows were better than average, and with the exception of one evening, there were adequate activities for everyone. (That one evening, the offering was "Hasbro", and "Marriage Game".) The "Playlist Shows" are O.K., but not up to the shows offered in the past with live musicians, at least two lead singers, and 8 to 12 dancers.
Decent sized interior cabin, well maintained, and with GREAT cabin service.