Two tween boys and a teenage girl traveling from Milwaukee to Myrtle Beach and stopping at Mammoth Cave on the way there. Looking for a route home with a couple of stops with some fun activities. The boys are full of energy, so walking around a museum is not there idea of a good time. We would like to take in some more of the east coast while we are there and have considered coming back via Cleveland/Sandusky and dong a day at Cedar Point. Any suggestions on either day or even quick stops along this route?