Bookings for Oasis of the Seas, the Royal Caribbean International cruise ship set to become the world’s largest, will open on September 3 this year.

Oasis of the Seas will boast the first amphitheatre at sea and two-level loft suites. The ship will have seven themed areas on board, including the ‘boardwalk’ for families with restaurants, shops, games, and the first carousel at sea.

Off the boardwalk will be the amphitheatre AquaTheater, with the largest freshwater pool to date on a ship. There will be two 43-foot rock-climbing walls either side of the theatre.

The ship will offer 37 categories of cabins. Park View and Boardwalk View balcony staterooms will offer inward facing cabins over-looking the open air areas of the ship.

The 28 two-level loft suites will be the highest cabins at sea, featuring floor-to-ceiling double-height windows.

Meanwhile, the ship’s central Royal Promenade will include a mezzanine level overlooking the main promenade, with a glass-domed ceiling.

Oasis of the Seas will be based in Fort Lauderdale, Florida, and start its inaugural season of 19 seven-night eastern Caribbean itineraries on December 12, 2009.