I would try a mom and pop Italian place in Huron which is about 10-15 east of Cedar Point called Macaroni's. No it is not the chain place it is a true mom and pop place. Reasonable prices and good food.
Try the other water parks. The Kalahari has a day pass you can get but go early they only sell a limited number of day passes.
Danny Boy pizza south on 250 not far from Kalahari has good food.
Take a boat ride to the islands and rent a golf cart - sorry no car traffic on the island- it is a fun way to see the sights. Pan for gold, tour a cave- very good idea on a hot day as the cave is much cooler. So a large geo stone. Sample so wine. Listen to the local band.