Must say that the service on board was great. Food okay, except for the Tuscan Grill which was a wonderful dinner. We opted to pay a little more for a larger stateroom and were so very glad we did, and it came with a number of additional very nice amenities. Definitely worth the couple hundred dollars for a 12 night cruise.
Entertainment was weak on board, although a couple entertains were worth the time; visit Michaels Club for a fun hour. Internet connections were some of the slowest I've experienced; not sure why, but everyone I talked with experienced the same.
The newly designed Cafe al Bacio was one of the best ideas Celebrity had in its makeover of the Constellation, and it was usually hard to fine a seat.
I didn't get the feeling of being on a larger ship, which was good for me as I really enjoy Regent's ships at about a third the number of guests.