If you get the munchies, Keystone will serve its famous mac & cheese, The Sandbar will serve Walt’s Wings and the Pavilion will bring the gyros. Familiarize yourself with each venue on Foursquare before the event and become “the Mayor” to receive a $50 gift card the day of the event. DJ Matt Joy and Bad Veins provide the tunes to keep the party hoppin’. 5-10 p.m. Friday May 11. Free. Fountain Square, Downtown. www.foureg.com.