Originally posted by Pellaz
Because the official Carnival policy is that all ships sail full. It is stated on their website and is the reason given why you cannot upgrade on the day of sailing.
Last year, on the Imagination, we had problems with a hallway flooding from the hot-tubs being emptied above us. 3 inches of water in back hallway. Two elderly woman, each travelling solo, got relocated. I had the last interior room, and the water came under the wall, into my room. They moved all 3 of us, into vacant cabins. I went from interior to interior, and was told that I got the last cabin available (I assume in my interior class). I was able to move back the next day.