Long Island’s Waterpark located at Exit 72 West, Long Island Expressway, Riverhead, NY (631) 727-3600, www.splishsplashlongisland.com. 18 water slides, wave pool, lazy river, kiddie area and more! General admission price is $34, Under 48″ and Seniors admission price is $27. Children 3 and under are free. For further info, please contact reception at 212-683-4832. Tickets must be purchased at UFA offices. Any unused tickets that are purchased thru the UFA can be refunded if tickets are returned by September 6th.