Some men are painfully shy, and this leads them astray when surrounded by beautiful women. For them, attending a ladies night event is a trial to their nerves. Many of them seek courage in alcohol because they believe this will help them relax. When the first drink does not help enough, they go back to the bar for another one or two. They may end up drunk, and this is not a way to attract women who are looking for a fun night out.
Using alcohol as a way to loosen up is always a bad idea, but many younger men see this as a path to get past their anxiety. They have yet to learn that a friendly smile and good conversation are what women seek. Ladies never like to be bothered by someone who is drunk and out of control, and they will quickly walk away from a man in this condition.