I deal with guests that are super crazy, like every day. Yes I sometimes can get snippy but 95% of the time I am lovely, charming even. No one is ON 100% of the time and if you are, you are a robot. I like being human.
For example, when I had to tell a woman about the plot for every Broadway musical and then she left to get cheap tickets, I said okay BUH-BYE, BIATCH… in my head.