Just came back from seeing it and what I would say is IGNORE the critics and go and see this movie. Like Julie said, this is a very different movie to what we are used to from Will but that is not necessarily a bad thing. I can see the message Will was trying to put across with the movie and I think it was executed reasonably well. Jaden's acting does have some work but I could see glimpses of Will in him. Especially when he .
Even though this was a serious film there were still some comedy elements in it and moments where the cinema were laughing. One of my critiques for the movie is that Jaden seemed too young for the part. I think this should have been played by someone older and I think that would have helped some of the problems. I'm not sure what that would have done for the whole father/son element but something just wasn't quite right with his performance. As this was essentially Jaden's movie, I can see why decisions were made to have Will injured early on and not have any action scenes.
My cinema was surprisingly empty considering this was the opening night so I'm hoping word of mouth changes that over the next few days.
All in all an enjoyable experience for me. If I were to rate this movie (in comparison to Will's other films) I would give this 6.5 out of 10.