I agree zoning needs to be checked.
I would like to do the same somewhere in south Florida. Somewhere far enough from the coast so I can afford it.
Be aware in NC they will likely not cut power on to a site if they know it is going to be occupied unless you have sewer / septic approved. You might be able to find a properly zoned place, install a small outbuilding and run power and water to it. Then after a bit of a wait move in the RV and deal with the sewer in your own way.
I see some Rv out in rural areas in NC but have no idea if they are legal.