In response to review, NHguy says ...

I would agree that interior staterooms on the "Sky" are a bit tight for more than two. In general, on the ships I've been on and my daughter can verify, the interior cabins on Carnival's ships are a bit bigger than on Royal or Norwegian. I thought it was hype, but it's for real. That doesn't mean they're any nicer, or more comfortable, just a bit bigger. IF you are lucky (or un, depending on circumstance) to get a wheelchair-accessible interior cabin on any ship (sometimes available last-minute), it will be larger than the standard ones for that line. We were two adults and a child in a cabin we pretty much only saw for the time it takes to shower and change. I was going to add "sleep" but nobody sees the inside of a cabin while...you get it.