My prior cruise experiences have all been on Carnival and I am an "active" traveler who also occasionally enjoys a little "downtime". If that also describes you -- I would recommend Carnival. And now I will tell you why.
Embarkation was a mess but that was at least, in part, due to the weather which I do realize is not something any cruise line can control. There was also apparently some sort of security "breach" and so our entire terminal was shut down for a period of time while we stood outside, without cover, in pouring rain and high winds.
Once on board (around 2) our cabins were immediately ready. I was traveling as part of a small group (9 of us) and my cabinmate and I immediately dropped off our small carryons in our room and were immediately greeted --by name --by our steward, Noyman. Every time we saw Noyman we were greeted by name and our service from him was excellent.
Lots of storage place, nice view from balcony. Location is perfect for getting to pool, guest services, Four Seasons, and buffet very quickly. Very close to elevator and stairs.