Designing a new cruiseship poses a challenge in predicting what future generations of passengers will demand in the coming decades, as the vessel will likely be in service for at least 30 years.

Royal Caribbean International’s latest ships are equipped with iFly skydiving and FlowRider surfing simulators, escape rooms, robotic bartenders, and a host of other features unheard of onboard vessels a decade ago, which are proving exceptionally popular with its Millennial target group.