As part of the Celebrity Cruises fleet since 1997, the nearly 78,000-ton Mercury is a city at sea. In addition to the ship's elegant formal dining rooms, there's also Broadway-style entertainment in the Celebrity Theater, a martini bar, cigar bar, and champagne and caviar bar onboard.

The full-service AquaSpa offers treatments ranging from aroma stone therapy to exotic jasmine flower baths. Accompanying the spa is fitness center, sauna, and Thalassotherapy pool. Guests can make a splash in one of the three swimming pools (one covered, two open), the children's pool, or four outdoor hot tubs. Sports fans can take a jog around the onboard track or play onboard darts, shuffleboard, table tennis, basketball, golf, volleyball, and even trapshooting. Young people can participate in Celebrity's supervised program.

At the top of the ship, the Navigator Club serves as a relaxing bar with panoramic views by day, and a high-energy disco dance club at night. Other bars and lounges include a champagne and caviar bar, a jazz club, and Michael's Club cigar lounge. Each evening, Broadway-style shows take place in the Celebrity Theater.