I found that I was distracted because I had read the first two books. I kept trying to find the elements of the books in the movie, and most of them were certainly there, but a bit mixed up. A binding thread had been added to the movie that was not present in the books, which was absolutely necesary, and it worked fairly well.
Overall, a great performance by all the actors, great art direction, and a fun, if easily forgetable, distraction for a matinee showing.
I was distracted becasue I had read the first two books. There was a lot taken away from the books, of course, but also a binding thread was added to make the movie more cohesive. It worked, and it was necessary