The rule is that we have to read the book before we can watch the movie. Last night the 3 of us settled down to the Prisoner of Azkaban, and are working our way through the 700+ page Goblet of Fire, which is year 4 out of 7.
JT must have been inspired by the Marauder's Map, as he's been drawing away at all things surrounding Hogwarts. He ran out of room the 1st time, so started all over again. Silly muggle!