No matter how long you get stuck at O'Hare or Midway (provided the airline doesn't lose track of you) and no matter what time of day or night you're sitting in the gate area, at least there's one thing you can do unencumbered now: get wasted. Besides approving that third Wal-Mart, the City Council today also unanimously approved 24-hour liquor sales at the city's two airports as well as those alcohol-filled pushcarts. Previously, alcohol sales at airports were shut down between 2 a.m. and 7 a.m. every day except for Sunday when it was shut down from 3 a.m. to 10 a.m. A Sunday morning flight without a Bloody Mary to ease our nerves? The horror. Anyway, if booze is your pre-flight stress reliever instead of Xanax, all 32 restaurants at O'Hare and 11 at Midway with liquor licenses now have the OK to stay open 24/7 to keep you drunk before you hit the sky because, hey, what could go wrong?