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 $35, under 48″ and senior admission price is $28. 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 through the UFA can be refunded if tickets are returned by September 5th.