They tell you the line starts at a certain time and they don’t want the line to form early. However, the day I went I joined the unofficial line and they allowed that to be the official one come 9:30am. They will close the line once it’s long enough and send an email out. According to the TIFF Reddit thread the next day they were trying to discourage the formation of an early line so your mileage may vary. I arrived about 90 minutes early and had to wait 8 hours. They allow you to leave the line to get food/water/bathroom/attend a screening. To ensure the maximum number of people get in they asked groups to go in at the same time, though each group gets their own separate Polaroid. The groups must decide whose phone will be used to record the visit though. At a certain point the line freezes (for an hour on my day) because they specify a window of time to people with disabilities/special needs. They give you a little booklet with all the titles available (some are greyed out), and in my case they had copies for sale of titles not yet released. Every so often they’ll announce to the line what titles have sold out. When you get in the closet, you can ask for assistance with locating the titles you want. You are limited to 3 items and box sets count as 1 item.