I don't care if it's all tourists here, there's something nice about eating poutine on the cobblestoned streets of Old Montreal. It doesn't make the poutine any less tasty: crisp fries, great gravy, and generous portions overall. You can definitely split one order between two people (if hungry) or three (if you're not greedy).
The beers are also a decent price, and there is ice cream - though we ended up going down the street to the maple store for dessert.