Saw this on New Years Day. It was good. I enjoyed it. I would have enjoyed it more if the asshole sitting behind me didn't push their feet against my chair, keeping me bolt upright the whole time, but I enjoyed it. So did my friends. I could feel the excitement radiating from one of them. 

My memory of Macbeth is a little sketchy. I've only read it once and that was December 2014. But I'm pretty sure they did a faithful job. I'm pretty sure they left a few scenes out, though that's understandable. The movie is 2 hours, it would have been much longer if everything was in it I'm sure. I liked the way they interpreted the characters' madness. Michael Fassbender and Marion Cotillard did amazing. I was particularly fond of Fassbender's acting. I thought he did wonderfully. 

It is a dense, intense movie so I recommend mentally bracing yourself before watching it. That said, if you're a fan of the play, I think you'll like this movie a lot.