My wife and I have sailed Carnival before about five times. I will skip over what anyone who has sailed carnival already knows and get into the specifics of this trip and ship.
The Carnival Breeze is an almost new ship. A few differences between the Breeze and other Carnival ships are the following: the entertainment was typical Carnival stuff. Not Broadway but more like a small regional production. If you expect the Broadway cast from Wicked, it "ain't" going to happen. It was something pleasant to spend some time after dinner. The theater itself is rather small vis-a-vis the number of ship's passengers so do not tarry after dinner if you have your heart on seeing one of the shows.
The food was typical Carnival too. The maitre d' Yogi was way above the norm and was very "hands on". You usually see Carnival maitre d' s only on the last night with their hands out expecting a tip. The serving staff was excellent although there were more changes that the norm in the course of the cruise.
Our cabin was toward the back (aft) of the ship. This made getting to some places easier and getting to other places more difficult. It was clean, very well-appointed and had everything required for a 12 day cruise. Gone are the CRT TV sets or even worse, the CRT TV set lazy Susan shelf which is an invitation to crack your head routinely. Slightly less drawer space than the older Carnival ships but quite efficient. If you are a veteran cruiser, you will have no surprises. Generally quiet but some passengers complained of noise by late night revelers.