You didn't say where in Michigan you would be departing, so these suggestions are just guesses. Depending on the interests of your children, you might want to try Mammoth Cave in Kentucky. This is a very interesting place and they have a National Park Campground there that is nice. Or you might want to try the U. S. Space and Rocket Center Campground in Huntsville, Alabama. Very interesting if your kids are into this sort of thing. They have a Campground right at the Center. Or you might want to try the Gatlinburg/Pigeon Forge area in Tennessee, near Dollywood. There is a ton of stuff in this area for kids to do. They have two excellent campgrounds in Pigeon Forge--Creekside RV Park and Riveredge RV Park. Good luck!