You hear every large truck going over the famous bridge
Yes, the view of the Mackinac Bridge is gorgeous and sunsets are nice, but you hear every truck apply their air brakes on their way to the UP. The lakeside sites have been rutted and squashed to death by too many RV's in too tight a space without substrate gravel. They should separate tents and RV's and forbid RV's in the delicate area near the shore.
Bathrooms are excellent -- at least in the lower campground.
Very difficult park to find in the dark. Use Church Road and look for the small "Family Fare" market on the corner when turning. Then three tenths of mile on right--- park is hardly marked. (don't pick site # 99 by the way. It's next to heavy duty equipment. Sites are packed together--- parking lot style.
Perfect place from which to drive to the Mackinac Island ferry boats just a couple of miles away.