Don't they still have the 30-20-10 or 20-10-5 (another marketing campaign wasted on me I guess)posters. In your seat, with doors closed at 10 minutes before flight time? I would have shown them that. I think the process for calling stand-bys has some fudge factor. If you are checked in, and not misconnecting, they will wait for you right up to when the print the manifest and final boarding, especially if you have status. Still, you play with fire like that you will get burned.