Cedar Point’s Castaway Bay won’t open during 2021 season due to renovations Updated Mar 11, 2021; Posted Mar 11, 2021 Castaway Bay, an indoor waterpark resort in Sandusky, won't open in 2021, according to Cedar Point. Facebook Share “Due to the renovation, Castaway Bay Indoor Waterpark & Hotel will not open in 2021,” the notice reads. The Castaway Bay Marina and the Quaker Steak & Lube restaurant, located on the west end of the property, will remain open. Cedar Point is telling its guests to reserve their overnight stay for Cedar Point’s upcoming season at one of its other properties, including Hotel Breakers, Lighthouse Point and Express Hotel.