Castaway Bay originally opened in as the
Radisson Harbor Inn. Cedar Fair (now Six Flags) bought a 99% share of the Radisson Harbor Inn for $2.3 million in . On , it was announced the company was exploring plans to refurbish the hotel into an indoor water park resort. Castaway Bay was officially announced on . The property re-opened as Castaway Bay about a year later on . On , the
TGI Fridays restaurant located inside the hotel closed. It was replaced by
Quaker Steak and Lube in May. On Quaker Steak and Lube closed and was replaced by
Famous Dave's which was previously located at the Cedar Point Marina. The new Famous Dave's opened on . For , the water park is undergoing a renovation with new branding across the property, including renovated rooms, and common spaces. The park introduced a set of mascots to promote the water park, including Gordy the turtle, who is included in the new version of the Castaway Bay logo. ==Dining==