I had my "almost" first AP experience today. We were at Dorothy Lane Market in Centerville Ohio. At register and while clerk was still ringing up groceries, I held iPhone up to terminal. Phone was off and nothing happened. I then turned phone on to Homescreen and my credit card pic came up and said "Pay with Apple Pay" and showed the Touch ID emblem. I asked my wife, first mistake, if I could use it when ready to pay. But, she said no. She had already written the check. So, I left a little ticked with one cart to the car to unload it while she finished up second card and paid. When done, her and my son were still not out. I was a little upset over not being able to use AP and not sure what was taking so long. Went back in and met them coming out. She looked weird and sheepish at me and said the register would not read the check. It took several minutes to get it to accept the check. I just laughed and said, serves you right. Anyway, one place were we regularly go that I can use it. I assume if pic came up it would work. Not sure why it didn't come on while screen off. Thought it didn't matter. The young male cashier said they do take it. So, I will put on OP page list unless I should wait until I actually pay that way. Will try other Markets like Earthfare and see. None of them has advertised it or saw any AP on terminals. I know from reading they don't have to show it to work.