How did Drew Barrymore end up in this?
Just seems like such an odd choice for her. She obviously hadn't reached her A-list status yet, so a cameo in a movie this obscure seems so strange. And obviously she wouldn't have had to do this movie. She was well beyond taking roles as extras.
Did she owe someone a favour? Did she know the director? Did she just happen to be shooting a movie next door and popped by the set for fun? There has to be some explanation.