One of my kids favorites

A nice state operated campground on lake huron, the beach is awesome, the one drawback is the rocks that extend about 20 yards from the waters edge, but if you have water shoes its not so bad, the bathrooms are clean and there are activities for the kids on weekends, check out the pile of painted rocks people place there, as its always getting new ones.

Just south of gaylord mi

A great campground about 20 min south of gaylord, on otsego lake, as with most michigan state parks they have nicely taken care of campsites and easy access to bathrooms, the beach from our site was a little bit of a hike but there was easy access to the lake via stairs, electrical is available and there was a good combination of rvs and tents so all are welcome, they offer actinities for kids on the weekends, and they usually have holiday happenings