Hello. I took delivery of my 2020 Cayenne S Coupe a couple of months ago. I had Modesta ceramic coating as well as Xpel protective film put on. The ceramic coating is amazing and I would highly recommend it. My car requires no real washing and no waxing. I simply rinse any dirt off the car and wipe down with a waterless spray and the shine is like a mirror. If your dealer has an experienced ceramic coating guy you should have nothing to worry about.
So how are you liking the coating? She finally arrived and here in Honolulu the ceramic job runs about 1700$ the whole car protective film 6k$. Acceptable?