Not going on this cruise, but did do the inaugural TransAtlantic crossing in October of 2000. It is a gorgeous ship, decks named for Fellini movies, very European in flavor. There are spectacular paintings on the walls in the Lido Restaurant - I went there late at night to photograph them.
Two things that stick out in my memory - a very cozy cobblestone hallway, hidden somewhere near the bow, small tables and some booths - not really a lounge but a very peaceful quiet place for writing cards, reading, etc. Don't even know what it's called but I think it's somewhere near the chapel (maybe one deck down?)
The other thing I'll never forget is the "glass staircase" - about 8 decks up - you can see through the steps - it's very challenging - especially after a few drinks! I sat in a lounge trying to get the courage to go up them but only got about 3 steps up and had to turn back. Not good for those who don't like heights! I watched people actually "freeze" and have to be helped off the steps. Once on the staircase, you can see down about 8 floors and there appears to be nothing underneath you!
The food and service were excellent - pasta, of course, was the best! Being a TransAtlantic cruise, there were few Americans on board, which was good for practicing my Italian. I'm sure the Caribbean will have a more American flavor to it. I rank it very near the top of my favorite ships. Bon voyage!
I wasn't too impressed with the Costa Atlantica. When you board you think you are at a carnival, and the cabin colors were atrocious, but then green and bright orange are not my favorite colors together. Much prefer Cunard, Princess, Rccl.and even the old Sitmar line. Just mho though!