Ev charging in camps expectation of availability, cost

I know of no campground set up for EV charging and most have a "one cord to a customer" rule as well (though some do not enforce it all that well)

If your EV can charge off 15 amps at 120 volt (or less the outlet is not really good for 15 amps) plug into the patio outlet.. i'd upgrade the wireing to that outlet however as I said the "uni-box" type outlets are not that good.