I went to the cinema by myself to watch this yesterday. Such a stunning film but also a very hard watch about addiction. I would highly recommend it. The Orkneys are stunning on it.
I am 6.5 years sober (although not through the AA or any other programme) and the film absolutely floored me. I cried a lot and then cried all the way home.
I've read the book and it didn't effect me so deeply.
I now can't stop reading about the film.