I dropped my car off at the Munich airport. There is an Agip gas station less than a mile away right off the main road. I used the automated car wash ( 12 euro) but wish I washed it myself. The automated car wash ( Sonax) looks pretty high tech but doesn't wash the car very well.
I suggest you use one of the many bays and wash it yourself. Both the automated and the self wash are in the same location. Here is the address
Nordallee 45, 85356 München-Flughafen, Germany
Use as much of the fuel in the tank as possible, leave the thank almost empty. That's what they recommend for transport.
I would not be worried about the car being unwrapped. You and the specialist at drop off will do an inspection at log out. These guys are pros, that's all they do.
