I got to see "Saving Mr. Banks" in a screening today and wanted to give a quickie review.
First of all, this movie has a lot more heart in it than I was expecting. There were plenty of times that I teared up, and I know that my friend sitting next to me cried at least once. Also, I teared up when I saw the dedication at the end to Diane Disney Miller. That was very nice to see.
Disneyland is only seen for a few minutes in the movie. They did a good job making it appear to be in the 1960's. However, Disneyland fans (like me) will notice that they weren't able to recreate the pre-Fantasyland makeover look. Honestly, I'm not sure how they could have done that without it looking cheap (like having painted tarps over all the rides).
I also enjoyed how in Walt's office they had some maps and other things pertaining to the land purchase and future construction of Disneyworld. It showed the detail that the set decorator used when creating all the set.
Also, make sure you stay for the credits. There are some nice pictures and original audio recordings played then.
Overall, I was very impressed with "Saving Mr. Banks". I'm planning on seeing it again and encourage you all to go see it at least once!