One of the best state campgrounds.  This is a very large park and can be hard to get into.  It has wonderful trails around it, good sized sites, an active ranger program for kids. There is the upper campground (Pines), which does not have direct views or water access, but is a great campground.  The lower section is on the water.  There is beach access for all campers along the water and gorgeous views of the Mackinaw Bridge.  It's a great hub for all the activities in the area: the dark sky park, Mackinaw City, Mackinac Island, etc.