So, what are they doing to keep others from jumping the gates and cutting into line with friends "who let them in?" I'm assuming that they aren't doing any sort of numbered ticket, wristband, or hand-stamp way of indicating who was in line early. Are they "patrolling" the line to prevent cutting?
Perhaps someone should set up a video monitor to make clear who is in line and who cuts.
They have smart phones...they can take some pictures if they are worried.