The Jones Family in Hollywood (1939)

John Jones (Jed Prouty) attends an American Legion convention in Hollywood and the whole family, minus the married daughter, goes with him. A minor movie actor, Danny Regan (William Tracy) picks up Lucy Jones (June Carlson) and gets her a screen test, which proves disastrous. The family takes a studio tour and they create havoc by stumbling onto movie sets and disturbing filming.