From the Milwaukee Streetcar:
The “Festivals Line” will replace The Hop’s existing operations during each of the nine days of Summerfest
(June 20-22, June 27-29 and July 4-6), with service still beginning at 5 a.m. on weekdays and 7 a.m. on Saturdays and operations extended until 1 a.m.each night of the festival.
Update (as of June 17. 2024): Instead of only Summerfest days, The Festival line will run every day June 20-July 6 including extended hours until 1 a.m. every night.
The Festivals Line will loop will serve all stops, as shown below. Northbound trains will loop through the Lakefront stations. Southbound trains won’t serve the Lakefront stations. The Festivals line will also see more frequent service.
Rather than having three streetcars on the M-Line and one on the L-Line, the “Festivals Line” will see all four in-service vehicles serving the entire route.
Wisconsin Association of Railroad Passengers 