Questions for discussion:
Why would a gambler adventure in such a risk knowing the embarrassment he would have received or even getting arrested for it.
If you happen to be the manager of that gambling shop what will be your action towards the foolishness of such an employee. Will it just be an angry shout or beyond that?
Do you think there is any measure through which the strange guy could be identified since there was no CCTV cameras stationed in and outside the shop environs?
Unfortunately, security cameras do little to solve these problems.
Security cameras are a good option to intimidate and try to prevent crimes from being committed, but once the crime is committed, the camera does not help much. It can be useful as a way to protect the establishment from possible crimes, proving innocence in some scenarios before the courts.
Regarding the situation of guilt, I believe that the cashier is also responsible, because he should have followed the protocol, regardless of the player's situation. Most players will play honestly, but those who will try to act illegally only need an opportunity, a small mistake to be able to commit their crimes.
Regarding the player, he is certainly an addict who no longer thinks about the risks or consequences, all he needs is to continue playing, betting and maintaining the addiction, regardless of what it may cost him.