FH and I are having our wedding at their family home, and we are concerned about underage drinking. We are only having about 3 guests that are under the age of 21, but still over 18. Since it is at a family home, it makes me more nervous, FHs family could get in a lot of trouble if something were to happen. How would you address the issue? I'm going to tell my cousins, no drinking! But that might not completely stop them. Should I tell the bartender who they are and not to serve them drinks, and my even coordinator to watch them? I don't want to seem crazy, but I don't want something to happen and us get in trouble for it.