SPOILERS! Very strange they added the Weasley's house burning down. Harry doesn't drink the whole bottle of luck potion, he gives it to his friends which keep them safe. When he goes to Hagrid's, he doesn't bump into the professor stealing plant juice, he's on his way to the spider's funeral. They cut moaning Myrtle from the bathroom scene and almost all the other ghost and portrait scenes. They cut the entire backstory of Voldemort and his family. Ginny does not go with Harry to the Room of Req., he goes alone and hides the book and marks where it is. Here she hides it so he can never find it. Harry and Dumbledore don't go to the town to transport out to the rock, they cheat and go from Hogwarts, Dumbledore says he has "privileges."