I sat through 5 shows of my daughter's high school drama group's performance of Xanadu (the musical). And apprehensive as I was having grown up in the 1980s, I was very entertained. Though I think I was often one of the few people in the audience who go many of the jokes that revolved around 1980s popular culture (or lack thereof).
I was never a big Oliva Newton John fan and although I think I did see the movie version of Xanadu (a film that most people agree was a major load of crap) the musical theater version is something worth seeing. However, unless your child is part of the cast, I don't recommend sitting through five shows of it. I have the songs Have you never been mellow and You're an evil woman worming their way through my brain and probably will for weeks now.
The same thing happened after her performances of Percy Jackson and the Lightening Thief, Into the Woods, Tuck Everlasting, Anastasia and Mean Girls. Her next show is Titanic, the Musical. I have to admit I have never heard of the musical version of Titanic, but I have a sinking feeling it will be sad.
But as I told my daughter, make sure you tell everyone to come see Titanic because it is huge!
She doesn't like my dad jokes either.