Yes, yes, yes. Our dealership washes MOST of our customer's bimmers as well.
Although, we DON'T wash the competitor's BMWs....like the dealerships down the street who have Dodge, Ford, Chrysler, etc. That acquire BMWs (trade/auction) and then have them serviced at our authorized BMW dealership.
And we don't wash.....when it is raining outside.
Just an fyi from my end.