Rory: First, don't feed the fawns! It just encourages them to beg. Second, don't lie to the greyhounds. Most of you may meet them at one point. Third, don't mind the ghosts, they are friendly and lazy. And lastly, the most important rule of all, don't trust the Greeks!
Rory: Go to the hospital wing. *walks over to him and hands him a map* You will find your way. And as for the other question... *walks back to the front* ...you must have heard of the Trojan War. If you have, you would know.