Help me out folks a bit. In DTW, you go with the Delta priority lane (or regular lane) at the Pre-Check Point. If your pass beeps at the TSA desk, you can go with the Pre line on the other side of the doc inspector.

In Vegas, there was a dedicated line for Pre customers. If it is random selection, how do you know to go there. DO you have to stand in the regular line just to go there. Why not let you know that your Pre and if you are randomly selected for regular divert you back to the regular inspection on the far side of the doc inspector?