It's funny when quintessential American business models bump up against foreign regulations and they have to find workarounds to keep in line with the law while trying to stay true to character.

Not long ago I was in a Five Guys in France. There was a sign saying that by law free refills are not allowed, please scan the qr code to fill your cup. I guess there was a qr code on the receipt, I don't know, as far as I can tell there was no enforcement and people just kept filing up their drinks like true Americans. Let freedom ring, I guess.