Liked the concept, reminded me of the valve VR games!
The way that the customers come in is nice, also clever use of creating only one level area that's static so no need to make too much 3d :)
Found a bit disorienting to more the camera up and down to give change I don't know why, maybe because we have to do it fast.
Still, very well wrapped up with everything in sync in the environment. It's nice to see the change updating on the computer screen instead of a HUD!