I just watched the video of the walkthrough of the King's cross queue, and I'm really impressed with the walking through the brick wall effect but I was wondering one thing. Since you view the effect then walk around a corner to go through the "wall," do you think people with hang back at the point where you can view the effect to take pictures / videos of the other members of their party walking through the wall? I am imagining lots of hold-ups at this point of the queue, and I wonder how disruptive this might be to the overall flow.