Drive Thru

Why Do I Have to Park in Arizona's McDonald's Drive Thru's?
Why Do I Have to Park in Arizona's McDonald's Drive Thru's?
Why Do I Have to Park in Arizona's McDonald's Drive Thru's?
Why does McDonald's make me park after I order? I order through the drive thru so I don't have to get out of my car, but when I get "parked" and something gets forgotten, I have to go into the restaurant, and now I'm mad.