BikerBoy from Maryville, IL on 12/28/2021 10:21:25 AM:
I highly recommend camping at the Community Club Park in Marthasville. If the weather is threatening, you can pitch/move your tent under the big shelter. Don rally takes care of the campers coming through there.
As for Sedalia, I have stayed at the MO State Fairgrounds. It was OK, but that was a few years ago. I don't have a fresh recommendation.