Maiden voyage: 2002
In 2012, we were on board the "Connie" as it is affectionally called. The fourth and last ship in the Millennium series, brings the azipod propulsion technology to Celebrity Cruises ships, which is all but standard today. The Millennium class ships were denoted as such as the first ship of the class, the Celebrity Millennium was launched in 2000.
Although when we sailed her, the Connie was 10 years old, I have to say that I was very impressed with the overall condition of the ship. It certainly shows signs of being well maintained, as sun, sea, and salt is very damaging to a ship.
One of the secrets that good travel agents know about is which staterooms are the best on each ship. The Connie (and other Millennium ships) all have a few standard veranda cabins with larger than normal balconies. We booked one of these cabins; 7175 while on-board a Royal Caribbean ship (of the same corporation) the year prior, as the travel agent knew that there were several "standard" staterooms that had larger balconies on deck 7, as well as the so-called "Sweet 16" cabins on deck 6. While suites also have larger balconies, they also cost more.
Highly desireable cabins
(Standard Verandas with large balconies):
Deck 6 (Sweet 16)
6021 thru 6035, 6016 thru 6030
7173, 7175, 7177, 7176, 7178, 7180
The primary differnces are that the Sweet-16 cabins have a direct view down to the ocean, but they are at the forward end of the ship, so you may feel more motion, while the downward view of the cabins on deck 7 are somewhat obstructed by the overhang of the suite cabins below them. However, they are at the aft of the ship, so they may not be as prone to feeling the motion of the ship.
The demographic of the typical Celebrity cruise is... well, old. With the longer cruises (longer than 7 days), the typical age of the passenger is older, and there are typically fewer children aboard. While the cruise line doesn't exactly roll up the streets after 6pm, the pools close at 8pm, and the activities are quite limited in the late evening. However, the demographic of Holland America passengers is even older, so pick and choose as you desire.
The ship has a unique Thalassotherapy Pool in the Solarium, which is supposed to be somewhat of a sea-water therapy pool, with fairly warm water. I am not sure about the actual benefits, but it sure felt nice after being in the pool for awhile.
Like most ships, there is a theater at the bow, and a buffet style resturant, along with the typical main dining room, and a few specialty resturants. There are two resturants that cost extra; the "Tuscan Grille", and "Ocean Liners", along with a snack-type resturant; "Bistro on Five".
Celebrity ships are primarily non-smoking ships, with no smoking allowed in any inside area, and many outside areas. Smoking is also prohibited on stateroom balconies. The only designated smoking areas are on the outside port-side of several public areas.
The ship also features stabilizers; little winglets that extend out of the sides of the ship underwater that serve to minimize the rolling of the ship. This provides a smoother ride in rough water, which enhances passenger comfort (and minimizes the propensity to become sea-sick).