There is legislation being proposed in Michigan right now to allow state residents an earlier opening to the reservation windows, essentially giving state residents some precedence in the use of their state park campgrounds. If anywhere needs such a rule Florida is it. I have close relatives who are Florida residents, and the hoops they need to jump through to get sites at their state parks in the prime months, being discussed here mostly due to Snowbirds, is totally ridiculous.
I hope Michigan passes and implements it, and other states such as Florida then follow suit.