See it if You enjoy Family Guy, The Simpsons, and/or South Park. Musicals written in a smilie style include Urinetown and The Book of Mormon
Don't see it if you are offended easily by jokes about race, sexuality, religion, or depression.
See it if You like to learn about music history, Carole King, or get a glimpse at how the music industry works.
Don't see it if You're expecting a typical jukebox musical. This has a powerful plot (which happens to be Carole King's biography).
See it if You enjoy dark comedy. Similar to The Addams Family, Little Shop of Horrors, and Rocky Horror.
Don't see it if You are bringing the little ones. It's a PG-13 type of show. It should be fine for mature children.