We all went to see Up on Friday for G's birthday and loved it. The thing I love about Pixar films is that they appeal to all ages - there are always small details/jokes included that go over the kids head but are designed for the grown-ups they know will be watching.
The film is extremely sad in parts - heart-tuggingly so, but there is an overall feeling of hope and optimism. As always with Pixar there are some great characters.
My youngest was scared during the storm scene - I think it was the noise more than anything and was a little wriggly in the middle, but other than that it kept us all entertained for a couple of hours.
Would definitely recommend - go and see it now!