Revealing mistake: There is a shot where the point of view of the camera is looking down at Christian and Toulouse from the opening in his ceiling. You can see John Leguizamo's legs behind him and that he is kneeling down. (00:06:00)
Revealing mistake: Throughout the movie, if you listen closely to Ewan when he whispers, you can hear that his accent switches from English to Scottish.
Answer: If Satine runs, the Duke takes control of the Moulin Rouge and shuts the place down, putting everyone she works with onto the streets. If she stays with the Duke, she'll still die, but the Duke won't have any real reason to shut things down. She could run away with Christian and have a few days of freedom and love with him, but she'd be condemning everyone at the Moulin Rouge to destitution, plus the Duke would probably have Christian hunted down and killed. By staying for her final few days, she saves everyone that she loves, at the price of her own happiness (and that of Christian, but at least she'll save his life).
Tailkinker ★