When we came back from LAS a few weeks ago, I was told that I qualify for TSA-pre, and the kid (<12) can also go with me, but wife has to go through the x-ray line. I said if she has to go, then everyone will go through the same line, and preparing for the opt-out experience as I had numerous times last year.
Well, thanks to the kids, they unblocked the WTMD just for us.