Strictly speaking, the show is somewhat based on a series of novels. There’s an awful lot of story in those that is simply not present t in the musical, but could possibly have been included in the movie. I don’t know if that’s actually what happened, but there’s certainly a canon source for substantially more content.
They do, often at elevated rates. A simple visit and x-ray, perhaps to check on an ankle after a serious mis-step, can easily hit several thousand dollars in charges beyond any transport costs.