water parks near seaside heights, nj. Most. Casino Pier is an amusement park situated on a pier, in Seaside Heights, New Jersey. The pier opened in and formerly extended approximately ft into the Atlantic Ocean from the narrow strip of the Barnegat Peninsula, including. Works best in offshore. Bring the whole family for fun, sun and amusement all Summer long at Casino Pier & Breakwater Beach, in Seaside Heights New Jersey. . Seaside Park in New Jersey is an exposed beach break that has consistent surf and can work at any time of the year. Seaside Heights/Casino Pier in New Jersey is an exposed beach/Jetty break that has consistent surf and can work at any time of the year. Offshore winds are from the northwest.