Making a film is so hard that if you don't have your main actors going along with the ride with the rest of the crew it can make your life very difficult.
Sir Alan William Parker CBE (born 14 February 1944)[1] is an English film director, producer and screenwriter. Parker's early career, beginning in his late teens, was spent as a copywriter and director of television advertisements. After about ten years of filming adverts, many of which won awards for creativity, he began screenwriting and directing films.