As Royal Caribbean designed its new Quantum Class cruise ships, a key initiative was to enhance onboard entertainment and amenities. Consequently, the Quantum of the Seas and Anthem of the Seas ships currently under construction include such “firsts at seas” as a 300ft skydiving simulator, a large sports and recreation complex with bumper cars and a roller rink, and virtual balconies with real-time ocean views on all interior staterooms. The signature venue on each ship, however…