奥兰多seaworld Orlando Flex Ticket的问题

Orlando Flex TicketPlanning to see more of Orlando on your vacation? Our Orlando Flex Ticket Package lets you see more for less! This package includes unlimited admission, for the length of your stay, to 5 incredible parks including Universal Studios Florida®, Universal’s Islands of Adventure®, Wet'n Wild, Aquatica, SeaWorld's Waterpark™ Orlando and SeaWorld® Orlando! Enjoy the best of Orlando for one great price! But plan ahead...this package requires a 10 day advance purchase and a minimum of a 5 night stay. AND, your 5th night at any Official or Partner Hotel of SeaWorld is FREE when you book this package.Book your vacation online or call 866-682-0755Please note that Orlando Flex Tickets are only valid through 12/31/2014.有懂的朋友，能给我简单解释一下吗？