Ohh! BTW, have stayed in both church and school parking lots in Florida and Tennessee also and was told it's completely legal where done. Some localities do ban overnight occupied RV parking. Most of our camping/overnighting is and always has been in CG whether, private, state parks, national parks, county parks, local public parks, etc whether a PPA member or not. Just got back form a week at Burt Lake State Park in the far Northern Lower Peninsula of Michigan and guess what? Not a PPA CG and was $26/day!
One of the local CG's for instance offering the PPA discount is Conestoga Grand River Campground right on the big Grand River roughly 8 miles east of our city's downtown. Nice pool, paved boat launch, beach, docks, full hookup, free WIFI, 86 sites, 2 bath houses, lots of good fishing for walleye/bass/pike/salmon/steelhead/catfish/etc, boat/pontoon/PWC watercraft rental on site, etc, so much more and at 50% discount! The big Grand River is plenty deep enough for even a 65'+ cabin cruiser and if so desired and there's many bayous to explore or fish etc. You can go downstream into Lake Michigan and continue on to anywhere on the planet Earth's oceans with your big boat. What an adventure! Of course, you could just paddle upstream for about 260 mile of river and explore the many bayou's going that way if that floats your boat. Not even including any of the many navigable tributaries flowing into the Grand.