Okay, well first y'all will laugh because of my name, but remember--it's not about wine, it is French for the color cardinal. I agree with ILVBB.
I am about as liberal as they come politically, but I am an arch conservative when it comes to drinking, smoking, and drugs. Two are illegal for minors and the other ought to be. They all kill. And far less important, they also most certainly impair athletic and intellectual ability.
And, despite the fact that I am also a lawyer, I think comments about due process and ex post facto rules are hogwash. Kids know alcohol use is illegal. Kids know that it kills--every year, we lose kids to drunk driving and alcohol poisoning. If they are going to break laws, they had better be prepared to deal with any consequences that flow from their illegal conduct, and that includes getting kicked off a team.
It takes a village to raise a child. If the parents won't do it, then I applaud the other parents, coaches and teachers who will.