My husband and I took our daughter to see the 3D version of the movie on Sunday. Let me say that I really enjoy the 'new' 3D technology as compared to the campy 80s 3D that just made random things jump out at you. This technology gives an amazing depth to the visuals. It's somewhat difficult to explain. You just need to experience it.
I found the movie to be very fun. Yes, there are some slightly scary parts that may scare small children but my almost-7-year-old was fine. Other than that, it should be an enjoyable time for the whole family.