You make money when customers buy drinks.
You do not make money when they stand outside on line in an attempt to make your EMPTY bar seem cool. You do not make money by kicking them out at 1:30 pm like rats from the pantry. You do not make when they spend 45 minutes driving to another part of town because your bar is an exact clone of the bar next door.
Let them buy drinks. It'll make both you and them happier.