@bbk : It was sort of a joke but its also my understanding that everytime an officer writes a citation they do have to follow up with possible court dates etc if the citizen chooses to go that route.
As was stated by others though that sitting outside of a bar and trying to breathalyze every person that walks out of a bar is not realistic. For one it is profiling not everyone person who happens to walk through the front door of a bar has been drinking.
Secondly merely walking out of a bar does not create probable cause that a crime has been commited. Moreover even if they did catch someone they have what, a drunk in public?
They also would not have time for all that drunk in public paperwork.