well...you ate the roll, what do you think?
I've seen many people either picking up food in the terminal before leaving or having a healthy lunch of King's Cashews, Cape Cod Reduced Fat Chips, XO bars and some type of alcoholic beverage.
I personally never touch the food in F anymore. I've had mold on my breakfast fruit one to many times. I'm not complaining as I've accepted reality for what it is and, besides, a free upgrade with no food is better than spending between $150 (AA) and $400 (UA) for transcon upgrades just for a hot meal and china. I am after all a "roach" at heart.
Long live the snack basket!