Fiesta La Ballona -- a Party in the Park -- will be held this weekend, August 28, 29 & 30, in Veteran's Park in Culver City. With carnival rides, live music, games, a food court, and a beer and wine garden for the adults, there'll be good times for all. Admission to the fiesta is free. Live entertainment on the stage is also free. Food, drinks, rides and other attractions cost extra. Ride ti…