I think the whole drinking not drinking thing depends on where you are going and what chicks you are after
I'm at uni and in my experience during the week (student nights) you need to be drunk, if not tipsy. This is because a vast majority of the girls out are also drunk, and it becomes increasingly harder to communicate with them. Plus you can come across as having taken advantage of her.
On the weekend you have more choice as to where to go, chilled out bars can be hit etc places where the music is low enough to allow you to have a conversation and generally the chicks are sober enough to interporate and understand what you are saying.
Not absolute but a rule of thumb in my eyes.
I'm Irish and if I tell anyone that I am not drinking again they just roll their eyes and laugh

Its a curse
