I saw this tonight and found extraordinary. I generally do not care for this kind of music either but it was stunningly performed. I found the choreography to be a great deal more than fine, and even more so because of the small stage area. Additionally, his name is JUSTIN and he has a co-choreographer, Patricia Delgado.
The play was slight but got more interesting in the second act. Some of the acting was not terrific but there wasn't anything amateur about anything on stage.
It's disappointing when someone leaves the show in the middle (during previews)and then speaks so dismissively.