From Ned Devine’s in Herndon to Old Brogue in Great Falls to Galway Bay in downtown Annapolis, Irish pubs are packed with revelers making the most of St. Patrick’s Day, and the start of the unofficial three-day weekend. are doing Friendly advice: No matter where you’re going, try to arrive as early as possible. Lines usually start forming in the afternoon, and no one wants to wait outside while friends are enjoying themselves indoors.