I will cruise next december on Constellation.Anybody can tell me something about the ship and sky suite?
GTS Constellation is a magnificent ship. The decor is contemporary, but definitely upscale, throughout the public spaces. The Celebrity Theater (main show room) has unobstructed lines of sight and outstanding accoustics. The main dining room is quite elegant, and there's a very upscale specialty restaurant if you want a truly special dining experience and don't care about the cost. The main buffet area offers a good variety of theme luncheon menus throughtout each cruise, and it also has pizza and pasta bars open from noon to 1:00 AM every day, a sushi bar every evening, and "alternative casual dining" (with printed menus and full table service) at dinner. There's also a spa cafe in the Magrodome that serves a cold buffet for breakfast and low fat plated meals for lunch and dinner. The ship offers a phenomenal variety of daytime and evening activities, too. Overall, I doubt that you will regret this choice!
That said, I should warn you that Celebrity's pastas tend to be inconsistent. They are often excellent, but sometimes either overcooked or undercooked.