I have to admit I was a little nervous coming to Canada. I had this notion that everyone would speak in French and I wouldn't understand anything at all. French was one of my worst subjects in high school. But no, it was perfectly normal, everyone was extremely nice and helpful. We asked someone how to help us get to the car rental area, and she literally drew a map for us. Came out of her booth and indicated where to go. She was one of those stereotypical extremely nice and polite Canadian.
Navigating the airport is also a breeze, and customs lines were short, we were out super fast.
One of the more organized airports I've been in.