I know this isn't YUL, but I have stopped using Park n' Fly in YYZ, and would rather just pay a little extra for the on site airport parking. I find waiting for that bus and then the hassle of the car not being ready (even though I called right after the seat belt light turns off) is very frustrating after a long journey.

One other thing about parking at YYZ. I like the open parking spot indicator in the short term lot, but why didn't they do this in long term? A quick way to find a spot is great.