We go to Michigan a couple of times a year. We stayed at a KOA last year that the kids loved. It is a new KOA and only had two full hook up sites when we were there (there are many water/electric sites) and the owners are wonderful. The campground is set back in a quiet wooded area, it is Ludington East / Pere Marquette KOA in Branch MI. 49402.
This is a good sized campground that was not crowded at all and is a short drive to the Lake Michigan beach and we spend time there also.
We didn't think the kids would have much to do there, but they absolutely loved playing with all the animals on site in pens (goats) and the owner's dog. Try it, you'll like it. We liked the late night hike to the old cemetary through the woods. You may think you are getting lost in the woods on the way there, but it is worth it. IMO
