SHIPWRECK ISLAND is open the last Saturday in April, the first Saturday in May, and then Saturdays and Sundays of May 14 and 15, 21 & 22. We begin our seven-day-a-week schedule on Friday, May 27 through Sunday, August 7. We are then open the next three Saturdays and Sundays in August, followed by Saturday, Sunday, and Monday of Labor Day weekend.