Location: GM Renaissance Center Showtime -- 8 p.m. Free Admission -- The Rockin’ on the Riverfront concert series is free and no advance tickets are necessary Concert Seating -- Viewing space will be on a first-come, first-serve basis and guests are encouraged to bring their own lawn chairs and blankets. Food & Beverage -- Refreshments and a variety of food concessions will be available at several locations on the plaza. Outside food, beverages or coolers will not be permitted. Dining at the GM Ren Cen -- Outstanding dinner options are available at the GM Renaissance Center’s delectable full service restaurants Parking -- Convenient parking is available for $5 per vehicle at the surface lot at the intersection of St. Antoine and Atwater, adjacent to the GM Renaissance Center. Valet parking is available at the GM Ren Cen North Lobby on Jefferson Avenue. Stay at the Detroit Marriott Renaissance Center -- Special Rockin' on the Riverfront overnight packages are available from $149. Boaters -- Boaters on the Detroit River are invited to anchor near the riverfront and enjoy the view of the stage from the water.