Went here to watch the first (painful) Leafs' play-off game. We got there early, unsure if it would be packed - it did get busy, but not until about 7:45 pm or so, so just a normal crowd, I'd assume, not tied to the game.
Service was excellent. Friendly, over-accomodating. In this regard, Duff's does a great job. I did enjoy my food, but it was nothing special (to me, anyway...I don't really like wings) to have me coming back "just 'cause". They have a big open window in the front which is lovely for nice summer nights.
Overall, I enjoyed my experience because of the service.