I'm a little apprehensive that the UP characters are, in fact, going to just be the stylized, costumed versions. I don't know how that's going to play to those in the audience who aren't kids. The original version of the show was one of my parents' favorite things to see in the park; I think I might be a little embarrassed to take them to this new iteration depending on how it shakes out.
But we'll have to see. Hopefully the characters are just window dressing and the bulk of the show has a similar tone to Flights of Wonder.