Yes. You will need to know the type of RV you're renting, the length of it, and be able to provide a photo of it to create your guest profile. (The rental agency website should have a photo you can copy.)  

It just needs to meet the RV standards we require as stated on our website:

All classes of RV’s are allowed (Class A, Class B, Class C) including Motor Coaches, Fifth Wheel Campers, Travel Trailers, Toy Haulers, Camper Vans, Truck Campers, and Schoolies. Towed Vehicles are also acceptable   

All Vehicles must be fully self contained: Your RV must have an interior toilet and built-in holding tanks (or a bladder) for waste water. Porta-potties are acceptable but must be dumped off-site at an appropriate facility. The dumping of any gray water on Host properties is prohibited. You must have interior cooking facilities.

Sorry, no tents of any kind allowed.  Prohibited: Tents, campers with tent pop-outs, mini-vans, sleeping in cars or trucks (even if these are self-contained)