One of the largest ships in the world, Oasis of the Seas makes an impression even before you board; the mega-ship looms above its counterparts. The this-can't-be-a-ship effect continues as you board; lined with shops like Michael Kors, Kate Spade and Starbucks -- and no outside windows -- the ship's Royal Promenade can feel like a hectic mall, rather than a cruise ship.
And yet, Oasis of the Seas has been enthusiastically embraced as one of Royal Caribbean's most beloved vessels. At 100 percent full (which it regularly is), Oasis sails with 5,400 passengers, but during the busiest seasons there can be nearly 6,500 people onboard. This despite the fact that Oasis of the Seas is one of the more expensive ships in the Royal Caribbean fleet. Its onboard attractions are so popular that up to a third of the passengers never even get off the ship in port.