It’s true that New York’s St. Patrick’s Day parade is the largest in the world, that there’s no shortage of Irish bars to visit in Boston, and that it may be worth a trip to Chicago to see the river run green. But one of the best places to lift your pint glass in honor of the patron saint of Ireland probably isn’t on your radar. On any given holiday (or really any given day), it’s a safe bet there are good times, or bon temps rather, to be had in New Orleans.