By far I have met more nice celebrities than nasty ones. Her problem apparently (according to my Sister in law) is that she and her entourage thought that the store should stay open (and give her deep discounts) just because she was famous.
Apparently, she didn’t realize that most Palm Springs store employees and owners are immune to that. They are much more likely to be generous with time and discounts and stuff if the celeb doesn’t expect or demand it.
At least most of them have the decency to be polite to others and not act like jerks.
It’s like you said,though.People are people regardless of their profession.