Re: Storing you RV
No official knowledge here, but indoor storage has to be better.
First off, UV rays beating down on the tires, fiberglass and roof (rubber?) with make the roof deteriorate, the paint fade and the tires rot.
Second, the lack of "weather" inside will stop water damage from leaks (longer lasting roof = less chance of leaks). The big storm outside will cause no damage to your rv.
Third, fading of carpet, curtains, seats will be minimized.
Forth, with good screens and screen door, it can stand "open" and breath. No musty smell when you go to use it.
Plus, easy to do maintanance and repairs inside on concrete.
Just my thoughts.