Dealer did tell me not to go through touchless as the soap they use can be corrosive to the roof seals, I think that would happen if you use it excessively, I've only tried it once just to see if there were indeed any leaks from the water pressure. To my surprise, none at all! the roof and windows are sealed better than my last VW EOS.
I still wouldn't risk excessive touchless wash for the strong soap they use, but I find self-serve coin washes quite good during the winter, where hand wash is just too brave.
random handwash places are sketchy imo. If i'm going to have the car hand washed it would be my own hands.