I can't say the Cursed Child was a disappointment since I expected a weak plotline. Still, the chemistry between Albus and Scorpius was amazing. The dialogues were witty, funny and sometimes heartbreaking. Yet, there is one thing I still can't wrap my head around and that I will explain a bit later. Nevertheless, I can't wait to get the chance to see the play, because the special effects look amazing! 
 Anyway I'll just start rambling now, because I don't have a structured review in my head. SPOILERS AHEAD!! 
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 First of all, where the hell was Teddy Lupin??????? He lives with Harry and Ginny, how can they not even mention him? 
 Secondly, I love Scorpius. He is amazing and funny, smart and such a good person and the chemistry between him and Albus was amazing. And hugs they gave each other really made up for the hugs Ron and Harry never gave. 
 I also loved loved loved Ginny in the book. She was so thoughtful and nice and calm and just the interaction between her and Draco was incredible. 
 Is it me or does Ron look like book!Ron in the play, but acts like movie!Ron in the script? Nevertheless, I still enjoyed how he was a funny note in the play, although he should have been more than only that. 
 Correct me if I'm wrong, but doesn't polyjuice potion take like more than half a year to make? How did Delphi, and later the Golden Trio, the kids and Draco, seem to make it in such a short time? 
 But then... Time travelling? Really? What is this book? The script of A Very Potter Sequel but without the songs? 
 I have to say, I did enjoy reading about the alternative world, but Cedric Diggory being a Death Eater seems so much out of character, even after he was humiliated. He was the person to comfort Harry during the protest (Potter Stinks! Support Cedric Diggory) against him in the Goblet of Fire. Don't tell me he couldn't take some humiliation. 
 Likewise, they didn't have to bring back Snape for me in the alternative world. Voldemort would still have killed Snape, just to get the Elder Wand. Anyway, I had the feeling this was just written to shock the audience as well as to justify all the crappy things he still did in his life. No, this still doesn't make him a hero in my eyes, whilst I felt like they were trying to convince me of that with his return. 
 Okay, then the one thing I can't wrap my head around is Voldemort having a child with Bellatrix. I tried to understand it, I really did, maybe Voldemort just wanted a heir? But this still sounds like a lot of crap to me. 
 First of all Bellatrix had the child days before the Battle of Hogwarts or when? Did you read and see her jump around during the battle? Seems very unlikely she gave birth days before... 
 Besides that nine months before her birth, Voldemort was busy taking over the Ministry and the rest of the wizarding world, since he would have impregnated Bellatrix in June/July/August 1997. This just all doesn't seem right, not to mention just the thought of Voldemort wanting a child or having sex or whatever. It doesn't feel likely. 
 Anyway, besides what you may think after reading all this, I still really want to see the play, because some things just seem incredible to see on a live stage. 
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