Excellent advice, so they don't charge you for damage you didn't do.
Ask about roadside service in case of breakedowns, possible emergency stay in a motel if the rig is in the shop. I have a motorhome and have used it extensively for 4 years, for months at a time. It takes some getting used to; showering in a "bathroom" the size of an old phone booth, dumping the tanks, monitoring the battery voltage, propane, etc....
It's very "cozy" or CLOSE living space. Everybody must get along well.
Rent RV the movie with Robin Williams; it features two very distinct but large motorhomes. It's mostly humor, but there is truth in it too.
Mine is a 1970 Pace Arrow on a Dodge chassis with a 318 gasser v8. Generator, dual AC, 3way fridge, solar panels...etc. My wife drives it very well.