Pass by everyone in the line by saying excuse me. Just walk all the way up to the front like you work there and you're late for work. Once you get to the top floor entrance there are 3 or 4 doors you can enter from. Enter the door on the far left. Once inside the doors and at the counter where you check in, walk down to the door farthest down the right (these people didn't see you cutting like everyone on the left side). Go stand by the far right door, kneel down, and rustle around in your bag for about 60 seconds. While you're doing this, say "go ahead" to people who are standing at the door in line. They won't say a thing because you let them pass first. Then stand up, the next person in that line will step up and see that you were there first, but looking for something in your bag. Smile at them and proceed to check in for your test.

Works every time. I must have done it a dozen times. One of my roommates perfected it and taught me the trick. You're welcome.