Frustrating experience because it was incredibly busy. The board read 104 minutes maximum waiting time, and it took me all of that in order to get and finish my 2 minute transaction exchanging vehicle registration for address change. I wish they had a queue just for quick transactions like mine. While I was there, they cut off G1 testing at 12 (this is one of very few ServiceOntario locations that also does just G1 testing, with no roadtest offered here).
They have a monitor and automated voice prompts that tell you the next number they're serving. The numbers are not sequential, so it was frustrating waiting for B1027 to show up.... when I started it was B1019 and most of the numbers served were A series or S series numbers so I had no idea where I was in the queue or if it was safe for me to even get food.
The waiting area is surprisingly large, you'd never suspect it looking from the entranceway outside. It's quite modern in design and has been nicely renovated recently. It feels like a fancy airport waiting area more than it does a government service office.
Don't be like me - set up an appointment online beforehand for priority service!