The performances, sound and lighting design, costume design, use of props for the boat.
What I didn't like
It needs some tightening and ran almost 30 minutes long, but I believe the crew is making adjustments to tighten up the show, shorten it, and enhance the pacing which will make it an all-around even more impressive show.
My overall impression
The scale of this production is high caliber. From the costumes to the set to the technical elements (sound, lighting), the show really has something special to it.