Visit the Durmstrang ship.

"Ok", you reply.

You've been curious about the other wizarding schools, and this seems like a great opportunity – to see the Durmstrang ship, with a Durmstrang student as a tour guide. You quickly pack up your papers, then rush up to the Gryffindor tower.

A few minutes later, you arrive out of breath at the Entrance Hall, where Krum is waiting for you, skulking in the shadows to avoid his avid admirers. The two of you walk out into the chilly, but clear, day, and down to where the ship is moored on the Black Lake. Soon, an intense discussion about Quidditch tactics springs up. Unsurprisingly, as you are both great Quidditch players, you have a lot in common. You reach the ship feeling good about your decision.

From close up, the ship is huge. It's black bulk looms over you as you walk up the gangway onto the ship. You stand there with your mouth open, gazing up at the two masts that seem to stretch forever into the sky.

"It is impressive, no?" Krum asks.

"Yeah!" you says enthusiastically, as you turn to look at Krum.

Krum gazes at you with a look of smug satisfaction of his face. It's clear that he is proud of the ship that he is currently calling his home. Krum gives a quick tour of the ship, showing your everything from stern to bow. You end up on the forecastle, at the front of the ship, gazing at Hogwarts castle rising from the mist that covers the grounds.

"We have a tradition for all new people on the Durmstrang ship", Krum says. "A bit like an initiation. The person has to swim in the waters of the Durmstrang Lake. I am sure that this lake will also be acceptable."