There was no counter at the airport, we had to wait for the staff in the parking lot. They arrived late, and it took about 20 minutes to complete the paperwork. All charges were deducted from the credit card. We were a group of four with a lot of luggage, so we rented a mid-sized Passat, but they gave us a small Mercedes. The car didn't feel as spacious as the Passat, but considering it was an upgrade, we accepted it.