although it may happen, i would assume that most big name celebs get dedicated service and a lot of ass kissing. when i was a bartender, we fell all over ourselves for local weathermen. i imagine we would have done much more for bigger stars.
once eddie murphy came into where i worked. 1 waitress did nothing but that table all night and the bill was huge. not only did he not tip but he didnt think he should have to pay. we were all also instructed not to look him directly in the eye by one of his underlings. although he probably wouldnt have known as he was wearing sunglasses inside the dark bar. the police had to be called to get him to pay.