So I got the chance to watch this yesterday and I think its awesome movie, I think even though they made Miranda way too nice. Even though the movie doesn't stick to closely to the book I think its a definate plus and it kind of brings something different so you can still enjoy both the movie and reading the book :).
I've also seen the film and really enjoyed it. And I have to agree with Allan, having read the book (okay, I lie. I've listened to the audio book) the plots are completely different. Not only that, but some of the characters have changed greatly. Most noticeable is Emily.