Overall
I think that this movie is just as great as the anime. It's one of the few where I think I personally prefer the Live-Action over the anime but they are both great.

Story:
The Story is overall the same as the one in the anime, but personally, I believe that most of the changes, which were mostly pretty small, were to get ride of nitpicks and inconsistencies that the story might have had in the anime. There were some small changes that I didn't like too but that's okay, it can't all be perfect.

Acting.
Personally, I had not seen any of the main cast in anything else except for Ishii Anna in YLIA, which I liked her in. After seeing them all, I have to say that they were pretty good in the movie and hope to see them in other things because I liked them all.