Googlemap with address.
Google Map showing how to get to the Marquee from the Opera House so you can have a frame of reference.
Theres a pay lot near by, street parking available as well as a supermarket across the street which probably won't care if you park there that time of day(don't quote me on that, but worth a look).
There's also a streetcar that runs along Gerrard that will take you there from the core.
There's a big sign out front that says "Marquee Event Theatre" so it's easy to spot. Would be a great place for a rave but they've got neighbor issues so it's a no go, but for our purposes that night it will be perfect.
The bowling alley is on the second floor.