This book is so disappointing, it broke my heart and even made me question the credibility of JK Rowling.
She has delivered a half baked story and even changed the major character traits of the awesome trio viz Harry, Hermoine and Ron. Even Professor Mcgonagall is way too distant and colder than her usual self.
Albus Severus Potter and Scorpius are under developed characters that for no concrete reason decide to fix things that need no fixing. Most disheartening is the fact that our beloved Harry has outgrown his adorable self and turned into a blatantly rude and pompous half grown adult. Hermoine is even worse! As far as I remember Hermoine always had an hint of superiority to her character but in this book she is just a clueless and careless Minster of Magic and a rather cold wife to the almost same Ron Weasley.
If I were you, I would steer clear of this installment. This book will taint your memories of one the best fantasy series every written.