We went last May, so the set up may have changed since then...
The show is about 45 minutes long, I think? The show takes place on a stage in front, which is about 2 feet tall. It's sitting room only in most of the theatre - there are benches lining the walls, but if you sit there, you won't get much of a view. No interaction with the characters, although they encourage the kids to dance at certain times. At the end, there's either balloons, confetti or bubbles (I can't remember which). It's a nice respite, just not a very elaborate production. We'll definitely do again - and I think they now have JoJo.