While they may 'open' at 6 they don't start serving food until closer to 7. The day I left, last Dec, I got my luggage squared away around 6ish, then headed over to the food court for some breakfast while waiting for DME to come at 6:50. I could only get cold stuff...muffins, pastries and coffee. So, I had to make do with that. I really had wanted something more hearty for the flight home. If I remember correctly, the signage at the counter areas for meals said they opened at 7.