What hadn't been mentioned is Celebrity offers a more relaxed cruise experience. It's a 'make your own kind of fun' cruiseline since the ships themselves, even their newest, don't have the bells and whistles of water parks rock climbing walls, zip lines, surfing simulators that Royal offers. The general ambiance is a more sophisticated shop design with Royal's Quantum class being the closest in feel to Celebrity's ships (which is why many Royal aficionados claim the Quantum class ships don't feel like a Royal Caribbean cruise ship). There won't be crazy poolside events,the most strenuous being volleyball in the pool or golf putting.