Don’t bother having a nap in the afternoon. Strangely, you’ll feel more tired than you would normally feel at three in the afternoon, but you won’t be able to get any sleep.
Buy Lots of Energy Drinks. Don’t just buy two, because your friends will drink some. Drink your energy drinks before Part 2 begins.
Bring Wizard Food. Freddo Frogs? No, they’re actually Chocolate Frogs with the enchantments taken off. Also buy a packet of
jelly beans Bertie Bott’s Every Flavour Beans to take and stick them in a container. Don’t forget to label the container so all the Muggles know how cool you are.
Dress Up. If you don’t, you’ll feel like an underdressed Squib. Alternatively, sit next to three girls who have dressed up. Get your picture taken with them.
Somehow, end up at the FRONT OF THE LINE to get into the theatre. You won’t know how you made it there, you just did. You will therefore end up with what are possibly the best seats in the entire cinema.
Shoot dirty looks at the people who are coming out of the cinema reeeeaaalllly slowly. Then, shoot dirtier looks at the theatre attendant who tells you that they need to clean the cinema before you go in. If you want, you can give dirty looks to the attendant who tells everyone 50 billion times to ‘Move back two steps.’
Snigger at the illiterate Muggles who cry when Harry goes to the Forbidden Forest to meet Voldemort. Clearly they didn’t read the books.
Stay the end of the end-credits. Some of your friends won’t want to do this… but you have a car, so you win.