At least you have Tim Horton's on your side. While walking through downtown, I noticed a Tim Horton's but I wanted to have a latte at Balzac's. Recalling a Tim Horton's in the secured area when I had a BA connection several years ago, I decided to eat a donut while waiting for my flight.
Although there is one before the transborder secured entrance, I assumed there would also be one in the secured area. To my surprise, the coffee shop is a Starbucks! It is amusing since all the gates after the Starbucks are to U.S. destinations. Passengers who want a Starbucks coffee only had to wait a few hours until their flight arrives at the US airport.