Inside The Magic;
"When filming a major Hollywood movie at one of the busiest locations on the planet, a photo or two is bound to leak out. That’s just happened with Saving Mr. Banks. Tom Hanks, who plays Walt Disney in the film, has been spotted in character during filming at Disneyland in Anaheim, California."
Ideally, he needs to be a tad bit slimmer in the face. But he looks good in the role either way. There was never much of a doubt about this as Tom Hanks just looks damn near perfect for that role really.