Hiring at movie theaters

I go to the theater and see age levels of the people that work there. I first see the people selling the tickets are like 16 yrs old. So than when you get your ticket and you want food the person there is like 21-23. So I guess they need someone with a bit better IQ to be selling food and taking complex orders on how many variations of Jelly Belly's you want.  When your all done with that than you have to go through the somewhat security people that tell you were your screen is. Those people are the ones around 35-older cause they wana have some sort of dominance of this young generation of emo kids. Those are your 3 levels but when you leave the theater the easiest job is the "good bye" person which sometimes is a handicapped person cause its the easiest job they could do with out screwing up.