Mousesavers says:
Tickets
Water Parks (Blizzard Beach and Typhoon Lagoon)
One-Day/One-Park Admission - $36.21 Adults (10 and older); $29.82 Children (3-9)
Annual Water Park Hopper Ticket - $106.45 Adults (10 and older); $85.73 Children (3-9)
Provides admission to both water parks for one year. Each park closes for a few months for annual refurbishment, but normally at least one water park will be open every day of the year.