Royal Caribbean unveiled more details Wednesday of its plans for entertainment aboard the soon-to-debut Oasis of the Seas, the world's largest ship.

Among the offerings, which the line says will be the most unique and varied at sea, are three shows in the ship's biggest entertainment space, the 1,350-seat Opal Theater:

-- Hairspray. A 90-minute version of the Tony Award-winning Broadway musical about a big girl with big aspirations who finds herself transformed into an overnight teen sensation. Licensed exclusively to Royal Caribbean, the show is billed as one of the most elaborate ever produced at sea, with a cast selected during extensive auditions in London, New York, Chicago and Los Angeles.

-- Come Fly With Me. A 45-minute production that will combine aerial acts, dance, gymnastics and singing. It'll be performed four times per cruise.

-- Headliner Showtime. A variety show offered three times a cruise that will include singers, musicians, and magic and juggling acts. 

Other entertainment options on board Oasis include an ice skating show, Frozen in Time, in Studio B -- the ship's ice skating rink. Performed seven times per cruise, it'll be themed to such Hans Christian Andersen children's stories as The Ugly Duckling and The Little Mermaid.

Royal Caribbean also plans multiple shows in Oasis' AquaTheater -- a first-of-its-kind outdoor amphitheater debuting with the ship. The unusual venue, which boasts the largest and deepest pool at sea as its main stage, has room for 600 passengers. Its two main shows: 
 
-- Oasis of Dreams. A diving and synchronized swimming show that will feature Olympic and NCAA champion athletes from around the world. Set to an original soundtrack, the performance will include synchronized fountain displays, lighting and special effects.

-- Splish Splash. A family-friendly, comedy-tinged dive show performed five times a week that will combine poolside antics with exhibition Olympic-style diving.

One more major entertainment venue aboard the ship is Comedy Live, an adult-focused comedy club that will offer several performances a night by stand-up comics. Royal Caribbean also plans parades and "street parties" in the ship's Royal Promenade.

As on other Royal Caribbean ships, admission to all of the shows on Oasis of the Seas will be free, but for the first time the line will be taking reservations for seating at the shows. Passengers will be able to go online up to three months before they cruise on Oasis to view show schedules and pre-book a space (though not a specific seat) at the performances they want to see. Passenger also will be able to make bookings at a Box Office on the ship or via their in-cabin television once they're on board.  

Reservations will be recorded on each passenger's SeaPass card, which passengers will be asked to show upon arriving at a performance to claim their spot. Passengers who don't reserve a seat in advance are still welcome at the shows if space is available.