None of our Hosts have age restrictions for RV's as long as they are in good repair and meet our self-contained requirements:

Important: All camping vehicles must be fully self-contained. Your RV must have an interior toilet and built-in holding tanks or bladders for waste water. Porta-potties that remain inside the vehicle at all times are acceptable, but must be dumped off-site at an appropriate facility. The dumping of gray water on Host properties is prohibited. You may only use your RV’s indoor cooking facilities at Host locations; the use of any outdoor cooking facilities is expressly prohibited.