ive seen many shows multiple times, including My Fair Lady, A little night music, Aida, Phantom, How to Succeed, Kinky Boots, Book of Mormon, Les Miserables, and a few others
why go multiple times?
1) different casts and interpretation
2) I really love a show and there arent that many truly great musicals(about 50-60 IMO)
3) Aida was the first musical i saw again because was so stunned by Heather Headleys performance I had to go back
4) I live in San Francisco, and there are only so many professional productions playing, so if a great national tour is here, I may go more than once
5) you start to look for, and look at different things, especially when you see the same production
I met a woman who said she has seen Wicked over 100 times, and a renthead who saw rent over 100 times, and a guy who saw les mis 65 times and wrote his college thesis on it
You may want to consider setting the bar a little lower for your book.
I mean, if someone has seen the same show 50 times, doesnt that make them a raving fan too?
If I lived in new york, I would still go to the sames shows I liked multiple times (and see a lot more plays, which i love but will not see when in NY because I love musicals more), especially if you can get great discount tix.....