Downtown Oconomowoc's main street (Wisconsin Ave.) will close as vendors line both sides selling wares, food and more for the 11th annual Fall Festival. Free children's games and an entertainment stage that will feature dance groups and live music will be on tap as well as a beer tent. Wisconsin Avenue from Cross Street to Main Street will be closed from 6:45 a.m. to 10 p.m. Planning to attend? Park outside downtown and ride the trolley this year courtesy of…