Adult are more matured, they are good in managing their emotion but kids can be too emotional.
This might lead to destroy their lives and will loss their focus on their priorities which is studies, I do not advise minor to gamble unless
with supervision of a parents.
Not sure of other cultures but in my country, if a child asks for parents permission to gamble even for 30 minutes, he will denied. That is the reason youngsters here do these things without the knowledge of their parents. Parents come to know about this only when they check the financial statements and notice something suspicious.
This is because in your country gambling is considered a bad thing because the people there are well aware about the consequences of gambling which is a very good thing for them in their future because they wouldnt have to face the consequences of gambling. If they are doing gambling without making their parents aware of that, they themselves would have to face the deadly ends.