Really mixed experiences here. The big screens are a lot of fun, but its been really hit and miss for me and my friends. One Saturday night we had reservations which they didn't have written down, so we got shafted and didn't even get to sit in front of the big screen. They gave us some free appetizers to make up for it but damage had already been done.
Another time I went and got lucky after a Leafs game and got decent seats quickly, but it was a random Tuesday so no surprises there.
World class sports bar, pretty good bar food although its overpriced, rolling the dice on the overall experience though - can win big, can lose big - kind of like MLSE in general!