- The Oasis of the Seas has virtually everything a tourist can dream of. Biggest attraction is a giant open-air theatre for 750 passengers that is a swimming pool by day and an entertainment arena at night. Passengers can wander through a park full of real trees and exotic plants, eat and drink in 24 restaurants or travel up and down between decks in a movable bar. There is something for everyone: a small golf course, a basketball court, an ice rink and two rock-climbing walls for those looking for athletic activities. Mothers can leave small children in nurseries while they go shopping in the ship’s boutiques.