Noon-8 p.m. Saturday, Sept. 28; 19745 Wellen Park Blvd., Venice. This is Wellen Park’s inaugural Oktoberfest celebration, a family-friendly event with a traditional Oktoberfest atmosphere, German dancers, a live polka band, a stein-hoisting competition and more. 1-4 p.m. Saturday, Oct. 5; 112 Circuit Road, Nokomis. Pop’s third annual Oktoberfest…