I mostly assume it’s one of those “don’t get crazy and get caught” situations. You let them taste some alcohol every once in a while so they don’t get weird ideas about it and go too hard when they get older. But we’re talking tastes, not shots. If they show up drunk with alcohol poisoning, I suspect you will have to answer some unfriendly questions to answer in all of the states. (Also, I mean, it’s bad for them. Don’t do that.)