It just comes up on the screen as age restricted product. You click the cashiers button type in the user number and password, then click age id not required. Pay and leave.
Yes but a number of the stores I worked in essentially had a cut off point. For example the lottery you obviously couldn't buy it after the deadline, the machines wouldn't work. As on a sunday, our tills were set to go belly up at 6.30 or maybe 6.15 as we were meant to stop all sales at 6. You couldnt even access the off licence after around 10.50 anyway