Two days ago, me and my best friend went and saw the One Direction movie. Generally I really enjoyed it, I personally like some of their songs so it was fun to sing while watching. The annoying part was all the screaming from every girl in that movie theater.
The movie was not very informative in their lives. It was mostly them on tour, but you can say you saw what they mean by this is us. Since many of the scenes were just them talking. And even more scenes were them on concerts.
Overall, you could watch the movie just for the fun of it. Especially if you like them, just please try not to scream (all you directioners). I came home with a terrible headache, which is something I did not particularly enjoy.