It was a great flick! Agree with
@MrsJD who said being a Disney buff enhanced their enjoyment. That's totally true. When "It's a Great Big Beautiful Tomorrow" started playing I got the goosebumps and then...BAM...1964 World's Fair?!?! I was completely floored.
I know IASW is a classic attraction that really doesn't need "plussing" up, but if the imagineers ever decided to do something, then they should take the idea from the movie...shoot some boats down a ramp to a "time travel" room or something like that!