After a very long wait, the nearly 100-year-old Harding Theater on Divisadero is back in action as a 4-story-tall arcade and bar. Drinkers nostalgic for the beeps, bops and boops of their youth should run, not walk, to the Grand Opening Weekend Kick-Off Party. DJs Miles Medina, Cutso and Umami will make sure things escalate on the dance floor once you’ve run out of quarters.