Yahoo Sports reports: PHILADELPHIA - He’d already spent a grand on tickets, plus hundreds more on flights and lodging, so by the time Edwin Hernandez arrived from Ecuador for the World Cup, he was determined to minimize expenses. “I try not to eat much,” said Hernandez, a 26-year-old software developer from Quito. “Keep this as cheap as possible.”Subscribe to The Post Most newsletter for the most important and interesting stories from The Washington Post. That usually meant McDonald’s or Subway. But hours before Sund