Music and entertainment venues line Decks 2 and 3 from bow to stern and include a piano bar, jazz and karaoke club and sports bar with names like Sam’s (from Casablanca ) and the Gotham Lounge (from the Batman comics). The two-story barrel-shaped disco called Dr. Frankenstein’s Lab feels like a Gothic castle, with dark colors and faux stone walls. The three-level Phantom Theater resembles the Paris Opera House where the famous Broadway musical is set. A bustling lobby bar anchors the glitzy nine-deck atrium that is trimmed like a Christmas tree.