If you're somewhere like OKW or CBR which has separate buildings, the scooter people will be able to deliver to your building. However, at places where there is no road access to non-CM vehicles once you're past the car park/check in areas, you have to meet them in the specified areas. Sometimes it'll be outside the main entrance, other times it'll be at bell services. AoA I had to meet the driver near bell services.
Maybe it depends on the delivery person. When we were at OKW, the delivery person for Walker made it clear that he expected to meet me at the check-in area both for drop-off and pick-up. He waited there while I drove the ECV up from Southpoint for pick-up at the end of the week. This was one reason why I decided that my next rental will be from a featured provider-I wouldn't feel that way if they had been willing to meet me at Southpoint..