Yes, the owner of the RV sets this up to cover their driving and time to set up.
Drop-Off/Set-Up is where the Owner takes the vehicle to a holiday location for a Hirer (nd is not movable by the Hirer)
We refer to this as the "Relocation Fee" which is added to the booking cost by the Owner before approving the booking -after discussion with the Hirer.
Be mindful that some Owners will only allow their vehicle to be towed/driven by the Hirer, and Drop-Off/Set-Up may not be available. You can check this via the Hire Options listed against the RV that you're looking at.