Seating Chart: There is a link to a
seating chart showing every seat at the Canon Theatre on the
BETMTO homepage.
Stage door: The setup of the theatre is very unusual: The address is 244 Victoria Street (which runs north-south). There is also an entrance on Yonge Street (pronounced "young street"), which is west of Victoria Street and parallel to it. This is much like the Imperial Theatre in New York, at which people enter from 45th Street and exit on 46th. But there is a twist:
Between Yonge and Victoria is O'Keefe Lane. The theatre itself is actually between O'Keefe Lane and Victoria Street. If you enter from Yonge Street, you will cross an indoor bridge over O'Keefe Lane. There are no windows in the bridge, so you may not realize this is happening. The stage door is off O'Keefe Lane. It is just south of the bridge.
Have a look at a
map of the theatre area. In satellite view, you can see the theatre and the connecting bridge to the Yonge Street entrance.
If you go to the stage door by turning left out of the Victoria Street exit, on your way to O'Keefe Lane, you will pass along the south edge of Dundas Square, which is the Toronto equivalent of Times Square, including a discount ticket booth called TOtix.
I live near Toronto and scouted the theatre a few weeks ago when I was in town.