Can you please tell me what's so great about the Royal Princess? I've never been on her, but for some reason, have not seen anything special about that ship. I'm debating whether to take a South America cruise with Princess on the Royal or with Celebrity on the Zenith. Have never cruised with Celebrity, but the itinerary of that trip is more appealing than any that Princess offers in spring 2003. I can't decide and really want to stick with Princess. Should I sacrifice the itinerary I want to stay with Princess?