I agree with seeing them install several charging stations in a central location rather than setting up each site. Depending on traffic in the area and the layout of the campground, they could install it at the front or adjacent to the campground as a pay site and generate additional revue by it being available to non-campground patrons too. Use the additional charges for leaving the vehicle after it is fully charged to encourage owners to move vehicles once they are charged to help with availability.
The other option in the near term would be upgrading several sites with charging infrastructure and then charging extra for those sites. Of course this would depend on the ability to upgrade the campground feed if necessary and the costs. It would be cost recovery for the electricity used and discourage those who don't have an EV from reserving the sites to have them available for EV users to reserve.
