I think the earlier locations have the benefit of understanding the ebbs and flows. There is a last call during the movie, I think it's usually an hour from the end, where all the remaining orders have to be put in. Most people put their orders in before the movie starts. When you need something, you write it on a ticket and put it in this stand that alerts the staff that you need something. I found it rare that people needed too much during the movie, and the staff usually crouches down and takes appropriate routes to get to your chair. When it's functioning, its a great system.