I realize that for many getting that coveted spot up against the rail upfront is important and then why standing in line outside the club to get that spot is required. However at the risk of sounding like a parent is it really that important to be right up front? Yes you are closer to the performers, but the sound is also not as great either. Depending on where you are it will be more of a particular guitarist amps blaring at you then the entire PA mix.
I have found in the past that arriving a few minutes after doors are scheduled to open, the line is either gone or moving quickly. Once inside you'd be suprised how the empty the club still is even after a long line of people have gone in. You might not be right up front, but three or four rows back, good spots along the railing in the balcony.
I realize hanging in line is a social thing, but would you rather see the show or be with your pals on the concrete for a few hours. If you have friends who can stand in line outside, then have them try to save you some space up front. But, don't be overly rude getting in place with them...
You'll have plenty of time in the years to come to be upfront, so for the time being arrive when you are likely able to walk straight into the club...