Go to as many Jays games as you can. If you went to Yankee Stadium, you'd be paying $200 for what you can get at Rogers Center for $40. And the who's who of Toronto is there, you can often spot a long lost acquaintance.
I find the large twist cones for $6.75 to be rather tasty, and the pulled pork sandwiches at the deli is not completely overpriced given that it is stadium food.