I've never been asked to show my AP while using the DDE, and I was only asked to show ID once. It was actually weird though that when the CM wanted to see my ID it was at Pop, and I only saved like twenty-five cents. So it can't have to do with the amount of the check, because I only spent $1 or something, and had to show ID, but when I ate at California Grill, and spent quite a bit, not only did my server not ask for ID, she didn't even ask to see my DDE card, I just told her I had it, and she took it off.