I held out as long as I could before taking Model 3 to a valet or a car wash, but I’ve done both now.
Valet: When I dropped it off, I went through how to open the doors from both inside and out, how to unlock the car with the key card, how to start the car, etc. Then, when I retrieved the car, we waited a looooong time. After a while I checked the car’s location with the app and walked over to find it. Sure enough, it’s a different valet, already in the car and pushing every button on the touch screen, trying to get it to start. He must have missed the screen that tells him to put the key on the center console. I took over, and noticed the warning not to use the emergency door release. Grrr.
Car wash: I go for the outside hand wash. I put the screen in clean mode, but then the attendant drives the car to the spot where they wash it - and shifting into drive cancels the clean mode. (I guess with just one screen, there’s no alternative.) I wouldn’t mind, except that when they clean the screen, they basically mash every button and leave me with new settings. Maybe clean mode should reappear when the car goes back into Park?