We are heading up there this summer. We are going to stay at Munising Tourist Park. I believe they started taking reservations in September for the next summer. I thought I was on top of reserving 6 mo out. I was lucky to get a site. Look up mushroom houses in Charlevoix, that may be of interest to you. Near Sleeping Bear Dunes: We are staying at Indigo Bluffs RV Resort in the regular campground area. It looks nice. It is very hard to get in to the Platte River SP. I was also looking at Empire Township campground but they were full for our nights. We may drive through to check out for future reference. Fish town in Leland looks interesting. Have fun planning. I had to narrow down a lot because we have limited days. I hope you have more time.
Marcia