My wife and I love the theater, we try to see them all. She had never experienced the story of Beauty and the Beast before and she really liked the show. Unfortunately for me, I watched the Disney version and I found the theatrical version to be extremely weak in comparison. I know you shouldn't compare the two. However, I was left thinking this looks like a high school play. I was very happy to hear that my wife enjoyed it.
Belle: was great very close to the Disney version in voice. She did a wonderful job and was the one truly bright spot in the show.
Beast: was weak. Nice voice but overall left you wanting more.
Gaston: was unconvincing. Once in a while he went for the character and you felt like he was Gaston. But most of the time he only went halfway there and then bailed.
Lumiere: Had the worst French accent I ever heard. Very poor.
Cogsworth: forgettable.
Mrs. Potts: Was sweet and had a a great voice. She did a wonderful job.
Chip: was great he did a good job as well.
Lefou: In the Disney movie was wonderful, but in the play was as weak as Gaston. Those two are a big part of the movie and if they are off individually and especially as a tandem, you can just forget it.