I have the "old" gray, so I don't have to was as often as other colors.
Definitely do not use a brush car wash...swirl city. I am using a touch-free car wash now. I'll have to remember to not get the one with the extra underbody spray.
Also, the service center put some double-sided tape on my pano roof covers, so they just stay on all the time. May or may not be messy if they ever need to come off, but I'm not planning to get the roof rack.
By me, there is another car was that will do a hand wash for $39 without an appointment. That may be another washing option if there is a place like that near you.
-m