I don't usually review movies, but since I reviewed the book yesterday and said I'd be seeing the movie, I'm making an exception.
Often, when I love a book, the movie can be a disappointment. It's really hard to tell the same story from an external point of view when it was originally internal. The screenplay was written by the same author who wrote the novel and - as a writer - I was blown away that she was able to tell this story so well in both mediums.
There are a few minor changes to condense the story, but fans of the book will find all the things that were great about the read have been translated into the film. We watched the movie with a couple who hadn't read the book and they enjoyed it too.