With cool events like the Comic Con coming up (which will have an Avatar Panel). It's important to realize that in the interest of everyone's safety crowd control is an important factor to take into consideration. If that is important to you then you need to use stanchions to really start to control the crowd in the way that you need to. With some velvet rope you can also do all sorts of things that you need to do in order to show that you are in charge and that your event is a professional event that will really start to help people find what they need. Erecting professional barricades will help people know where they need to be and when so that they can know exactly how they can best participate in the event and really have lots and lots of fun while staying safe and having the fun time that they really need in order to shine.