I've seen it a couple of times. I had got tickets to see it at the Disney Studios in Burbank, with a tour afterwards, and then got a ticket to watch a preview at the AMC in Downtown Disney. I loved the movie. It is sad, but we found ourselves laughing in so many parts.
Emma Thompson nailed P.L. Travers, and Tom Hanks also did a good job with Walt Disney. My favorite in the movie, though, was Jason Schwartzman as Richard Sherman, and then Paul Giamatti as Ralph - such a good character.
Both my daughter and son's girlfriend also enjoyed the movie very much.
Okay... edited to add --- I watched it three times. Some good DIS friends were in from back East, and I watched the movie with them. I thought that I might be bored the third time. I was happy to note that I thoroughly enjoyed the movie, even after the third time I watched it.