I saw that you just posted a follow-up, but I was going to post and tell you not to read it because I had the opposite reaction: I really didn’t like it. I had the same feelings about Harry Potter growing up as you did (and it sounds like we’re the same age), but I really didn’t like the play. It actually sort of ruined some things for me (and I felt like a lot of characters didn’t act like themselves, and I really didn’t like the plot much), though I suspect seeing the show live is a much better experience than just having the text.
But equally, I was also going to tell you to disregard what I say and read it for yourself, so I’m glad you did, and that you enjoyed it. :)