So - we’ve been tent camping a bunch with the Model 3, and never had a problem charging it anywhere.
This year, I’ve got a seasonal site at our favorite campground (and a trailer on order ... any day now, really!).
It’s never affected us before since we’ve always been tent campers, but the campground has a $2/day surcharge for running the A/C in our trailer. Even for seasonal sites like mine.
(Sidebar: If the A/C is a 15 amp draw, that’s about 1.8kW. At 8 hours a day, that’s 14.4 kW. Given an average of 14c/kWh, that’s right around $2/day. So I don’t think the A/C surcharge is unreasonable.)
Now - since I’ll be spending so much more time there, I suspect someone will notice that I’m charging the X or 3 (or, both!)
If they question me, I’ll offer the same $2/day as the A/C. The only time I’d really “need” to charge there is when I’m moving the trailer in or out. If it’s just a run from home, I’ve got plenty of juice to round trip. It’s only 50 miles each way.
But my point is ... when we were “transient” nobody ever said a word. Now that we’ll be seasonal, I’m expecting them to say something. And if they do, I’ll offer the A/C pricing. Most times that’d be roughly equal anyway. (300wh/mi x 50mi = 15kW x .14c/kW = $2.10)