Owner Bart Blatstein Debuts the $100 million ISLAND Waterpark which features 11 slides, a 1,000 square-foot surf simulator, first-of-its-kind nightlife entertainment exclusively for adults and much, much moreĪTLANTIC CITY, N.J., J/PRNewswire/ - History is being made this Independence Day with the opening of ISLAND Waterpark at The Showboat Resort along the famed Atlantic City Boardwalk.