@donkeypong Your advice is so utterly simple, straight forward and logical, but it sounds to me like what they are doing (or attempting to do) is throw a band-aid on to a much bigger problem! This is not the sort of thing that is going to have a "quick fix" and the sooner they opened their eyes to this, the better...
Apart from that - I must say that I think their particular "band-aid" approach is So very TACKY! Encouraging a bunch of drunk youngsters... how very professional for your brand image.
Great post! Maybe they will be fortunate enough to stumble on it...
*young drunksters