You book the plane ticket, and it's official: You're heading to London!
But what that really means is: You’re heading straight into the heart of the wizarding world.
There are so many big decisions to make. Do you bring the DVDs with you on the flight, or just the books? And which ones?
If you've got Amazon Prime, you can rent any of the books for free on your Kindle, which will lighten your carry-on considerably.
The flight can't go fast enough, and the fact that you need a plane to fly to London makes you feel like such a Muggle.
You land in London, and you're ready to see EVERYTHING.
You're walking near Covent Garden, and there's Knockturn Alley. It's eerily quiet.
And across the street: The real-life Diagon Alley. There are bookstores and antique shops all over!
Nothing can get you down — not even the Muggle sights that are way too close to such magical locations.
You wander the streets looking for magical places. You tap every brick. Surely there must be some secret entrances here somewhere.
And the signs are everywhere that the wizarding world is all around you. You turn a corner and, hey, it's the Durmstrang ship!
You hop on the Muggle Underground — it's what Arthur Weasley would've wanted — looking for more.
There are a few Harry Potter walking tours, so you take one. Two hours later, you're ready to rewatch every film in the series.
But soon, you start to get disappointed by ordinary, non-magical sites.
And what's with this money? Pounds and pence? Things would be so much easier if the Brits just used galleons, you think.
You crave even more, so you buy a ticket to the Warner Brothers Harry Potter studio tour, about an hour's journey outside London.
Inside, it's all there. The doors open, and you're in the Great Hall.
The tables are already set. Can't we just stay and eat? The house-elves are probably cooking anyway!
But there's no food, so you keep walking. Look, there's the Gryffindor common room!
There's the entrance to the Chamber of Secrets!
Look at the Hogwarts portraits!
There's a spot for you to practice your wand skills. You're waiting in line behind an 8-year-old in a Ravenclaw scarf, and you're just as excited as he is.
After a few minutes, a strange thing starts to happen: You start to feel a sense of the history of this world.
It seems strange to say — you are aware, after all, that Hogwarts is a place that only exists in the mind of each and every person who reads the books or watches the movies — but still, there's a history here. You look at the Daily Prophet headlines and remember the moments that have come before.