I'm not sure of their current rates (and you have to put in you info on the site to check for rates and availability) but we stayed in an overflow site about 4 months ago and payed around $25/night. It was 30 amp with water and no sewer, but the dump station was nearby. They don't have any RV 10-year rules, so far as we could see. Our RV is a 2002, and we saw some other older models in the campground as well.
I think price varies, but we didn't hear about a 10 year rule.
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