Montreal (food):
-Scwhartz Smoke meat (if not vegetarian)
-Breakfast at Deppenaur Le Pickup (best coffee in town, and best pulled pork sandwich in Canada:) And super friendly-creative environment
Also Parc la Fontaine(Montreal) is a magical park when visited properly (cold beer with friends)
On the way, there is a really nice antique vintage shop in Kingston (called pickers world market) Nice to check out.
Have fun!!!