Ms. Mae's, on the corner of Magazine and Napoleon, is a New Orleans institution -- and not because it's open 24 hours or is one of the cheapest bars in town. Well, that might have something to do with it. Inside, you’ll find pool, air hockey, and foosball. You’ll find very cheap drinks served in plastic cups. You’ll find big groups and singles, older folks drinking during the day and college students at night. And you might even find that rare, bold, endangered animal attempting the Ms. Mae’s 24 challenge: finishing one drink per hour every hour for a full day.