Driver stopped after driving through parking lot of closed tavern and making wrong turn from exit.  Driver admits to drinking at a concert venue earlier and police note an odor of alcohol and glassy eyes.  Driver does marginally well on parts of field sobriety tests but is arrested after failing Portable Breath Test (PBT).  Post arrest breath test is only .08 so Administrative License Suspension does not follow.  DWI charge dismissed prior to trial.