There's no half price Tuesdays to my knowledge at the Empire Theatres. Maybe that's because I've never been on Tuesdays
I have a scence card too, but I wouldn't go that far out of my way to see a movie. Empire Theatres at Jackson Square is so conveniant and close, and it has good theatres as well. I believe there are 6 theatres and they're on par with Cineplex. I'm not sure about the price, may be cheaper. There's also the old theatre right beside the University in Westdale which plays only 1 movie, but the movies there are usually foreign or chick flicks.
The bus system may seem confusing at first, but that's just because it's new. It's a much easier system to understand than Toronto. Hop on any of the 4 different buses that come to the university going east. They all converge at downtown, 18 minutes away. That's right at Jackson Sqaure. You then take any bus from downtown that go out in all directions. So you could take one back west to the university, or south to Limeridge Mall.