My wife and I (33 y/o) travelled sans three young children on the Carnival Dream (May 19th - May 26th, 2012 - Eastern Caribbean). Needless to say, we were looking for a relaxing time as opposed to a 'wild and crazy' cruise, and the Dream delivered.
Embarkation: Very smooth. We are from Florida, and have been out of Tampa, Miami, and Port Canaveral (all on Carnival). I would rank Port Canaveral as the best of the three as far as the embarkation process was concerned. Make sure to have your boarding pass, passport, license, and all of your stuff in gear before you get there. That way, it will be easy for you and your fellow passengers to move through the line.
Food: After reading the reviews here, I laughed at a lot of the critics that 'live to eat' as opposed to 'eat to live'. With that said, the food on the Dream was good. Great? Not really. However, we did treat ourselves to the steakhouse on one of the nights (good choice, great value). The lanai BBQ (5th floor) was also a good choice. Everything else was alright, but the food doesn't make or break our vacations.