How much were tickets?
Corks inside the Longos is a great bar to head to before the game. Great beer selection and food at very reasonable prices. The wings and pizza are quite good. Sit at the bar though if you could for faster service, but for the most part the service is pretty good. Will be busy before Raps games.
If you want a good place for cocktails and late night eats, Ellven is actually quite good. A little on the pricey side, but the food is good and its right outside the Scotia Arena. You might bump into a player around that area or one of the coaches inside the restaurant later after the game, since some players/coaches live in the condos up above. If you want something more casual and are good to walk further, Bar Hop on King Street or the location on Peter and Queen are great for craft beer and late night eats.
Inside the arena, try to visit the Hot Stove Club or Scotia Club at halftime. Great bartenders, and drinks and could squeeze in a good app if you order right away or could go before the game and order for halftime. Hot Stove Club is always jammed packed for Leafs games, though for Raps games its always easy to get a spot. When it was the ACC club, everyone was allowed in but since its now the Scotia Club, sometimes they give you a hard time when entering. I'm good friends with one of the bartenders at the Scotia Club. Either one is good though!
For merch, the Sports Chek across the street is really good. If you want stuff customized then Real Sports inside the arena is your best bet.