I was annoyed because we needed a big table to seat like 8 people. The only two big tables were occupied by these bunch of people playing cards. There were no other tables big enough, and not enough small tables close enough that we could combine into a big enough table. These card players were seated right in front of the counter. So clearly they did not go unnoticed, and I imagine the supervisor or manager will definitely see it himself or herself. Yet… they remained.
There were signs posted to ban studying. Perhaps gambling is unofficially sanctioned.