Yes, it's a campy tourist trap, but Pat O’Brien’s has genuine atmosphere and history, and where else can you see copper-clad steampunk-esque dueling pianos playing different versions of '80s Billy Joel hits? The courtyard, lit by flaming fountains, is genuinely lovely, but folks mainly pack in for their Hurricanes, a blend of rum, juice and grenadine.
If the pianos get too much, you can cross the hallway and drink in the relative calm of their actual bar. The place refunds $3 of the glass cost if you return it. Otherwise, take the Hurricane glass home as perhaps the only thing you may remember about the evening, especially if you opt for two or three.