I'm looking for a rental car to be used to visit suppliers during my trip to Korea next week. I know the travel policy allow us to rent Mid/intermediate classes, but the AVIS in Seoul has way cheaper full size one than intermediate. So my manager and myself decided to rent full-size but the system doesn’t allow me to rent the full size. Do I really need to rent intermediate that is 3 times expensive than full size? Or is there any way to rent the full size? Thanks!