Something I heard from someone who worked at the Palo Alto Apple Store two decades ago:
Steve Jobs's kids drew on an eMac with markers or something. He made them make an appoint for the store's Genius Bar and wait in line to have it looked at like everyone else. I don't know anything about how the staff tried to clean it or the outcome.
I grew up with the children of a multi-billionaire. His kids went to the same daycare as I did, and it wasn’t particularly fancy.
Some ultra-wealthy people live fairly normal-looking lives.