Meet inside at 19:45 on the main, grand steps for the 20:00 3D screening in the Grote Zaal of the Pathe Tuschinksi.
The tickets will almost certainly sell out so book your tickets in advance (see here: http://www.pathe.nl/film/16596/the-great-gatsby/agenda). I suggest we all go for the front row or nearby (the screen is not that close to the seats so the viewing experience should be fine. Book your tickets asap! I've booked mine in the left hand side.
Discussion after in a nearby bar for those that wish to join.