I was offered this on a flight out of SEA at the end of May. I figured I would try it but the latest appointments they offer are one hour prior to your flight time and I never get to the airport anywhere close to that early. I still booked it just to see what happens (there is no payment required) but didn’t end up using it as I have Nexus and PreCheck. Even though it was Memorial Day and SEA was rammed, I still rolled in at around T-40, there were only three people ahead of me at Pre and I still had time for a quick bite in the lounge. I can’t see this being of any use to me.