Most Carnival Ocean View cabins are 185 square feet. Not bad, and probably a bit larger than you're accustomed to if you've sailed some of the "other" popular cruise lines. The shorter Carnival cruises tend to be a little bit more "active" than some of the longer cruises. You'll have a GREAT time, regardless, and I'd suggest taking a long look at the "Carnival Caper" each evening and deciding what you want to do the next day. Don't miss the big shows, as IMO they are great.
Marine, Pilot, Singer, Tuba Player, Carnival "Diamond"!