There is very important paperwork that needs to be completed during pickup. That is the inspection report (also known as the bill of lading). This is your proof of the vehicle’s condition at pickup.
Keep it in a safe place and have it ready for when for when the vehicle arrives at the destination so you can compare the two. If you see something marked on the paperwork that wasn’t marked there before, that is damage and you have a claim. It is very rare that damage occurs, but you want to be ready just in case so we can help address it with the driver.