That's why you have to have a guy to book or simply move to a place where there is no waiting in line (hint: consider cultural aspects, not all cultures are okay with waiting in line).
This is also related to the importance of time in your life. If you are going to make more by hiring a guy to reserve it for you than you do it yourself, you get the idea (opportunity cost)
http://www.theatlantic.com/magazine/archive/2015/05/paying-to-get-inside-the-restaurant/389561/