Is it rude to go through the car wash with a bunch of snow on your car?

So, it just snowed, but it is above freezing today. I went through the car wash once earlier this year with snow on the car, and the workers did a lot more work than usual, spraying and moving the snow off the top of the car before I went through. Which was nice because I didn’t have to do it.

Is it rude to go through the car wash with snow on your car or is that part of the service provided by the car wash?