Protips:
Ball cap, or a baseball hat.. Not just "cap".
Baseball glove, not mitt.
Catcher, not Back Catcher.
Hot dogs with all the garnishing or sausage /bratwurst if you can find them and beer are the most traditional ball park foods.
Learn the words to Ok Blue Jays, so you can sing a long during the 7th inning stretch, where everyone gets up and well, stretches to music
Don't cheer like it is a homerun just because a player hits the ball into the air in the outfield... Contain your glee until you know it was a HR or a hit...
Don't call it a match, it is a baseball game.
Enjoy!!!!