Revealing mistake: Throughout almost the whole movie Harry's glasses don't have lenses in them. Only in two or so scenes do they appear.

Harry Potter and the Deathly Hallows: Part 1 (2010)
Ending / spoiler
Directed by: David Yates
Starring: Ralph Fiennes, Bill Nighy, Helena Bonham Carter, Alan Rickman, Daniel Radcliffe, Emma Watson, Julie Walters, Rupert Grint, Richard Griffiths
Genres: Adventure, Fantasy, Harry Potter
Harry, Ron and Hermione are captured and taken to Lucius' estate. Dobby apparates into the house and rescues them along with Griphook, Ollivander and Luna. Dobby is killed during the escape by Bellatrix. Harry buries him. Voldemort breaks open Dumbledore's tomb and takes the Elder wand.
Count3D
Harry Potter: This is mental.
Hermione Granger: Completely mental.
Ron Weasley: The world's mental.
Trivia: This was the first of the Harry Potter movies to have JK Rowling as a producer.
Question: Ron, Harry, and Hermione use polyjuice potion a lot. I'm confused as to how this is. In The Chamber of Secrets it is revealed that it takes a month to make. It would seem unlikely that Hermione would carry around a cauldron and potion ingredients and waste a month making the potion after they had a plan. If Hermione had made them over the summer, she would have only had time to make a few before she would have to leave with Harry and Ron. How do they get all their polyjuice potion?
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Chosen answer: It's explained a little more in the book. Hermione swiped Mad-Eye Moody's stock of the potion when Mrs. Weasley wasn't looking. And it's possible that, when they ran low, she simply replicated it with a Doubling Charm.
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