We had already sailed with Celebrity Constellation and we already knew what to expect, so this time we opted for a cheaper inside cabin (yes, choosing the right location in the ship, deck 8 to the fore).
The interior cabin was pretty good, individually controlled air conditioning worked perfectly and we did not have any odor problems.
Cabin is the same size as the regular balcony cabins but without any exit, all the back wall is a large mirror which makes space look bigger.
One of the things we like the most is the Celebrity Millennium class is the adults-only area with their warm saltwater pool, normally quiet and silent venue.
This time we did not like the rules for adults only access to this area were not enforced, and some days solarium, pool and hot tubs were occupied by a loud crowd of teenagers and children.
We would have liked less smoking areas around the ship, and we do not understand how come table tennis tables are next to people smoking big cigars.
Dress code should be applied, people came to dinner in the main restaurant as if going to the swimming pool (flip-flops, shorts and t-shirt).
Another surprise we did not like: Michael's Club was restricted access to suites occupants, that was a wasted venue.
So called "music" of the DJ is too loud and gets annoying in some places and at inopportune times.
About food and drink:
Prices of wines and drinks have risen since 2011.
In Trellis main restaurant main dishes are excellent and we always received them warm and exquisitelly presented.
They need to improve some tasteless and cold starters straight from the fridge, and those withered salads.
We found that the meals take too long, the service is too slow between dishes and there are too many delays.
In buffet restaurants food in general is quite good, but as well some long queues at stations (grill, etc.)
Some details to improve: usually bread and pastries are too raw, pastries are too sickly sweet for our tastes, and withered salads are unseemly in this category.
We liked the folk rock guitarist and singer Sean Golden.
The main theatre musical shows were quite good, vocal soloists are high quality and the orchestra is superb, the dance choir is a little uneven but it made a nice effect.
The musical group at Rendezvous is pretty terrible and the woman singing is plain dull.
We missed a good jazz band just for the atmosphere.
Also we missed a cabaret type show as the one we enjoyed with Perry Grant in Michael's Club on Constellation in 2011.
About Harwich, the port of departure and arrival, that was a two hours boring trip by bus from Heathrow.
We plan to avoid this port in the future or we will try to get there by train.
The Harwich International Port train station is adjacent to the dock.
About ports of call:
At Le Havre the ship docked at Quai Roger Meunier, some 2km away from the city, a taxi ride to downtown Place Hotel de Ville is 8 euro.
They provided free shuttle bus to downtown at Belfast and at Kirwall (Orkney).
In Orkney, Skara Brae and Yesnaby cliffs are must visit if you have not been there before. Hatston terminal is 3km from Kirkwall center.