Food: 1519 has always done our own food, rather than buying food in the arena. It's easy for us, since we usually have a ton of other family members involved.
Someone (often my mother) buys a bunch of lunch meat, sandwich rolls, etc, and others bring fruit, snacks, and cookies. Then a parent with a van loads it all up and parks as close to the arena as possible for an hour while the team goes in shifts to eat. It's a lot cheaper, more filling, and way healthier. And honestly, you need to get out of the arena for a few minutes to enjoy the fresh air and relative silence.
PS - If you go to St. Louis,
don't pre-order your lunch.