The view will be something like this.
View attachment 654227
I took this several years back but should still give you an idea. This room was pretty far towards the south end of the PPH tower, rooms toward the other end might see more of the Pixar Pier area. At that time they did play the WoC soundtrack on a channel on the TV in sync with the performance so you could turn that on and watch from afar (though all you can really "see" are the fountains, not the projections or anything). I assume they will still do that.