We started from Abu Dhabi which we had 2 days to explore before departure. This turned out to be a wise move, we arrived with our luggage still in Amsterdam. It took >30 hours for the luggage to arrive. We had booked this cruise because of the interesting itinerary. We had experience from a previous Celebrity cruise (the sister ship Millennium) some 7 years ago. Constallation is fairly old (2002?) and it was apparent that times take its toll. She was tired in places and polishing the surface, a coat of paint and some acrylic mass were clearly not sufficient (for cabin review, see below). For a company that focus on an exceptional experience we expected more. There have been some changes in the ship construction over time which had the effect that the announced jogging track was a misnomer. There was no loop to exercise on on lower decks. We traveled Aqua Class. The cabin was on deck 9 and the cabin/balcony was affected by a large overhang of the pool deck. This was clearly a negative factor, the cabin being somewhat dark and with no sunshine on the balcony except during sunrise (early!) and sunset. It also turned out that the size of the cabin was not different from lower class cabins! As Aqua Class passenger we could use the Blu restaurant. Compared to other who had booked Concierge Class we felt that we got an inferior and overpriced offer. There was a general lack of sunbeds and many weared down beds (was not removed!). It was annoying that many guests reserved beds in the early morning but not turning up. This practice was not allowed, but the pool staff never took any action. We had a Classic wine package. This was overpriced compared to the limited selection of wines we were offered. On a similar note, the unlimited internet package was very expensive although the connection generally was unstable and slow. The food was acceptable but not more. The Blue restaurant gave good value for money whereas the Oceanview cafe was not great. Lot of food but no finesse and the food was often overcooked. A clear step down from our Millennium experience. The entertainment in the theater was, with one or two exception, very good. In fact the only element of the cruise that justified the price. The "house bands" and entertainment in bar etc was really bad. Of many thousands bands and entertainers in the world .....? Why choose two dance bands that were so similar and largely played boring (and loud!!!) music for a younger generation? The 2 classic violinists were uninspired and appeared like amateurs. We felt that the entertainment was not a priority. We also noticed that the senior officers were rarely to be seen, we hardly saw any of them. We called on 9 ports and normally docked in industrial areas with a fairly long shuttle bus ride out of the port area. For those of us that find the ship sightseeing tours overpriced and not attractive, this was a negative experience making our own arrangements difficult. On the positive side, our cabin attendant was nice and service minded and the Blue restaurant waiters were very professional and nice. In summary, we felt that this cruise did not offer value for money. The cruise experience was not more than average, and we were left with the impression that "milking" the passengers was a priority.