I would totally stay away from Carnival. I've been on 12 Carnival cruises, 11 Disney cruises, and 4 Royal Caribbean cruises...in that order. Royal Caribbean's Voyager-Class ships are my absolute favorite so far! It's a great line and very comfortable. I've always met a lot of people on them. I'm a 36 y/o single male. I was just on the Mariner Of The Seas a month ago and I'm going again on March 21. I think you'd really enjoy it a lot. There's plenty to do and everyone is so frinedly. Give it some thought. Have a great day!