You should find out if the restaurant and public facilities including the swimming pool area, tennis courts, etc. have accessible routes to them. Rental Cars Hertz, Avis and National supply two-door full size cars with hand controls at most major cities. Others may but you will need to ask. Customer questions include whether they need a two door of four door car. Individual should bring their own parking permits with them if they have them.
Rental vans are available in many major cities.
You will need to know whether the wheelchair user is going to be the driver or not because all of their vans are not equipped with hand controls. A three way conversation would be helpful. In traveling outside the US customers may bring their own set of portable hand controls to put on cars because most rental companies do not provide hand controlled cars or vans. Attractions Bus tours may or may not have wheelchair access. Outside the US it gets more difficult to get accessible vehicles.