To the OP, you are speaking of the ADA (American with Disabilities Act). It requires all places that do business with the public (and their employees) to make REASONABLE ACCOMMODATIONS for persons with challenges. So, if you really want to stay at a park that does not seem to care if you are there or not, write a letter to the manager/owner, and calmly indicate that they may be in violation of the ADA if they refuse a reasonable accommodation. As noted by other posters, the manager might claim that a golf cart is not reasonable. Then ask about a mobility scooter or other mobility device. If that is refused, then you might have some grounds to pursue further action if you desire. But, get it in writing. As others have suggested, it might be more trouble than it is worth, compared to moving on to a campground that gladly accepts you. Best wishes.