I am planning a road trip from Cleveland Ohio to Yellowstone park with my family ( wife and three boys- 3,5 and 7). I'm planning to go there this summer in the beginning or mid June. I'm trying to go through either north or south Dakota and return the other way around . I just needed some suggestions for where to camp with a pop up trailer with power. I'm taking about two weeks for the Yellowstone road trip. I'm thinking five days to get there with four days in the Yellowstone park area and five days back. Any suggestions of what to visit and where to camp will be greatly appreciated.