Camped at the Sandusky KOA during Fourth of July Weekend. I will never do this again. The campsites and grounds were too crowded and the restrooms were not clean. They should have people available round the clock to clean during holidays. On the positive side the grounds were level and Wi-Fi worked great.
We camped at Deer Ridge during the last two weeks in October. The sites were level and set up was easy. The park has Wi-Fi available and does work in the camper. The owner's were friendly and we would camp here next season.