RV park free wired internet good for only 1 laptop question

The park owner can put as many access points as he likes but if the basic backhaul available to the owner is crappy the service will still be crappy. Even if he has fairly good access, connecting a couple of hundred users would cripple most connections. To get good service you must pay big bucks and RVers are not going to pay what it would cost to provide this service.