You know, normally at these venues people buy tickets for specific seats and all of this mess is taken care of in advance.
What is the tight-fisted-with money reason that this can't be done to ensure some "Christian" decorum?
It only goes as well as it is managed. They've been dealing with this for decades and still haven't got it figured out. In the real world, people get fired for such an ineffective spectacle.
Learn some crowd control techniques, already!