In this case, of course, the example of the parents is some kind of stupid and short-sighted behavior. I understand that not everywhere in the world there is a ban on visiting physical casinos for minors. But still, in many countries such a ban exists and parents will not be able to take their child with them to a room where, for example, slot machines or poker tables are located, where he will see adults playing games of chance and even try to play on his own. In this sense, the casino rules themselves, based on laws protecting the rights of children and adolescents, must still be followed by law-abiding and legal casinos. Knowing about these rules, normal parents still will not take their teenager with them to the casino.
But there are probably exceptions that you write about.
Well there are parents of parents, some show things very clearly to their children and open their eyes, I do not agree with that type of education, I know that they have to be guided , told things, the dangers, especially when they are in a casino, because of the games of chance that always include a great risk of losing money, but it is necessary to talk to them and tell them that it is much better to do things right, that they know where the money comes from and that certain sacrifices have to be made to obtain it, that is why you should not waste money in a casino, and that for this an Age Greater than 18 is required.