We have cruised with Celebrity before and can say this was the worst ever. We have had three cruises this past summer and this cruise was the worst of the lot (the others were with Princess and Cunard). In brief - the cabin (inside) was a good size, properly furnished and everything worked; the entertainment in the theatre was of a high standard and the staff (with some exceptions) were generally helpful. On the other hand, the food was of a poor standard in both the restaurant and the cafe - breakfast was served in the cafe on cold plates which meant everything got cold very quickly, it was better in the restaurant but some of the waiters were extremely slow; dinner in the restaurant was a hit or miss affair, often a miss, food was of poor quality and sometimes inedible, the food in the cafe was virtually the same every night of the cruise which meant that very few people used that facility. Amazingly for an American ship, coffee was never hot, often tepid and frequantly cold straight from the dispenser. About 3.00 pm in the afternoon when people were coming back from shore excursions the cafe had virtually no food available for returning guests. In addition, on most occassions food had to be served by crew members, guests were often not allowed to help themselves.
Additionally, the ship was generally very cold. The weather was often bad (we were running a head of a hurricane) and the outside temperature on the low side (on sea days it was often pouring with rain outside) which made the cold ship even colder. At one point the airconditioning unit in our cabin would only put out cold air which made the cabin very cold. It took numerous complaints to get it fixed which took two days.
Finally, two separate points.