If you want a more peaceful getaway in Door Co (in the fall) Potawatomi is a good bet.  It's not in the center of the Door Co hubBub - but it's close and a lovely park in it's own right.  The campground is away from the water but trails leave right from the campground to get into the park and near the water...and there is a nice selection of trails to choose from.  Our campsite was one of many surrounding an open area that was nice as it was quite rainy when we were there so less claustrophobic than being buried deep in the woods.  Our campsite was separated nicely from adjacent ones though a little small, especially as we also had a tarp (did I say it was rainy?!?!). So often I think this Park is overlooked because it is south of the main Door Co energy - but it is a park well worth visiting - It's also where the Ice Age Trail starts!!!