biggest ship

She takes that enviable title away from another Royal Caribbean ship, Allure of the Seas, which in its 2010 debut dethroned another Royal Caribbean ship, Oasis of the Seas.

It may seem Royal Caribbean is determined to keep that "world's largest" crown in the family.

But as they prepare for Harmony's debut, Royal Caribbean executives insist they're more concerned with pleasing passengers than bagging more bragging rights.

"We're literally down to the wire and having hourly and daily and weekly meetings just ensuring that not only is [Harmony] the world's largest but she literally is the world's best cruise ship," says Mark Tamis, Royal Caribbean International's senior vice president of Hotel Operations.