Yes, as far as possible you should visit and check out the RV that you are planning to rent. Ideally you should verify the exact RV that you will be renting, next best option is to checkout a similar model.
This is particularly important if you are a first time RV renter. The discussion with RV owner or rental agency will give you a first hand feel of the RV’s features and limitations.
If you cannot do an in person visit then try a Zoom or Facetime session where the RV Rental company or RV Owner walks you through the RV’s functions.