The fifth L.A. Fiesta Broadway will be held Downtown Sunday from 11 a.m. to 6 p.m. The free event features more than 70 entertainers, 250 food booths, games and exhibitions. Vehicular traffic will be prohibited from Temple Street to 11th Street beginning at 9 tonight. Other streets shown will be rerouted in the affected area, with most of the changes in effect from 9 p.m. Saturday to 5 a.m. Monday. The Metro Red Line will extend service on Sunday until 10 p.m. For transit information, call (213) 626-4455.