Agree with you here, as long as they ask everyone (minus super rude customers). We've noticed here (by observing other tables), especially in the Hanoi, that th

Agree with you here, as long as they ask everyone (minus super rude customers). We've noticed here (by observing other tables), especially in the Hanoi, that they only give the QR code to people who enthusiastically answer and look like they are enjoying their food.