I’m not here to stop you from proposing to your beloved on the jumbotron this summer. If your dream is to ask your partner to spend the rest of your lives together in front of 40,000 people who share your fandom (or 3,000 people if you’re an Oakland A’s fan), I would never try to stop you.
Source: LifeHacker – What It Really Costs to Propose on a Jumbotron (and Better Ways to Spend That Money)