OPACY3-1   Orioles fans are spoiled with the best stadium in baseball, but are we really making the most of it? Here are a few tricks for an inexpensive day at Camden Yards, or if you’re hell-bent on splurging at the park, we have a few must-haves. Our thoughts include best practices for bringing small children, and a few vantage points you shouldn’t miss. What did we leave out? What are your game-day traditions?