The College of Wizardry is a "live action role play" (LARP) event. Each person involved plays the character of a witch or wizard for the weekend.
Tickets for a 3-night stay at the Hogwarts-esque castle (called Czocha) starts at 390 Euros, or about $436.
As it says on the website: "This is an event about witches and wizards, not a Harry Potter event. We think the Harry Potter stories are great, though!"
As you can imagine, they take things very seriously. There's a 560-page student handbook that's written in character.
You can order a leather bound copy, or get the PDF here.
The main handbook is an 88-page "design document," which helps players create and play their characters.
There's also a special "midterm madness" edition of the design document, and another book about magical animals.
Some students are assigned Prefect duty (similar to college RAs), and points are awarded to students.
They include Alchemy (potions), Beastology (similar to care of magical creatures), Herbology, and Magical Theory.
Students are taught how to cast spells, which work on each other if they agree to imagine them working on each other.
Source: Cosmic Joke UK
It's up to the the LARPer on the receiving end of a spell to have the right reaction, whether it's falling to ground or dodging the incantation.
Source: Cosmic Joke UK
Some of the experienced role-players use makeup and elaborate costumes to bring depth to their characters.
At the end of the weekend, there's a celebration similar to the Yule Ball from "Harry Potter and the Goblet of Fire."
And of course, there's Quidditch. The real life version of the game is similar to dodgeball, soccer, and rugby all in one.
Source: Cosmic Joke UK