I'm at the same place as Zap. I never pack food except for an occasional sandwich that gets consumed on the first day. After that if I'm hungry I go get food and insist that nobody in my crew go hungry at any point in the day either. If they can't provide crew meals and yet expect us to just keep flying all day without taking a break for proper nurishment then they've got another thing coming. If this causes a delay, so be it.