Typical MI State Park
You get electric, period. Dump station available, potable water available there, as well as various spigots within the park. Beach ok but narrow. Firewood available, with free loaner wagons to get it to your site. I found the west side of the park a lot noisier than the east. The separate south campground was closed for repair, so I can't speak to that. Be aware that in summer, thousands of tentworms will be on virtually every tree, often falling on you when you're sitting around. They get on your awning, so be careful before rolling it up.
Month of VisitJune