My husband and I saw Harry Potter & The Cursed Child. Unsurprisingly, most of the attendees were adults (ages 30+) with a handful of children (ages 10+). Like the later HP books, it has some scary elements, plus a very long run time (about 5 hours for the two-part show, which we decided to see all in one day). I'm a HP fan, and also a theater fan. Putting the two together should've been my dream come true, and I did love it as an extension of the HP story, but as a theater production it wasn't as fabulous as other shows running on the West End, like Les Mis or Phantom.