I actually love my job.
On a normal day, my customers are usually polite, friendly, courteous, and will joke with me while I am helping them work the bipolar photo kiosks or trying to close a temperamental cage. Occasionally, you get a prick, and I can usually throw them to my boss and watch her chew them apart; when I can't throw them her way, I know that the praise I have gotten from customers will far outweigh any complaint they give if I mouth off to them.
I am a people person. No, really, I am! But I cannot handle the absurd amount of rude, thoughtless people when they come out in droves as they do on holidays.