There is a camping world just up 80 a couple of miles, they have free camping for RVs, no reservations needed. I stayed there for almost 2 weeks at the beginning of this year and I didn't have a RV, I was staying in my 4 runner. No one ever questioned me, if I ever need anything they sell I will definitely buy from them. Good luck and enjoy your trip.
You can stay overnight in an RV but you have to get the permission of the store manager first.
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