We went on Saturday. Our theater has it rated as PG. I think it should definitely be PG-13.
IMO, the things I didn't like would probably go over the heads of a 5-8 year old, but the 9-13 year old group will definitely get the things that are implied. I think my kids at 10 and 11 1/2 are a bit immature for their age, and they got them. We had a talk about how that wasn't approporiate. Hindsight, I probably should have left the theater, but I didn't.
So no, I didn't like it and I wouldn't recommend it.
Yes Dakota Fanning was cute, but it's not worth the baggage that goes with it.
Also, the cat seemed like he was trying too hard to be a cross between the scarecrow in Wizard of Oz, and Willie Wonka. Got on my nerves BIG TIME!