Happy Days - The Musical June 23, 2017 - August 19, 2017 Recurring weekly on Friday, Saturday, Sunday Way Off Broadway Dinner Theatre 5 Willowdale Dr., Frederick, MD 21702 (301) 662-6600 Fri & Sat 6pm; Sun 12:30pm. $ E-MAIL | VISIT WEBSITE Overview Map Goodbye gray skies, hello blue! Happy days are here again. Based on the hit television series, "Happy Days" reintroduces one of America's best loved families, the Cunninghams to a new generation. Fri & Sat 6pm; Sun 12:30pm.