I guess it depends on the food, the chairs and the service. And seriously, what happens to those bathroom line-ups?
Went straight to Cancun from Edmonton in October, just 6 hours of knees pressed against the chair in front, and on the way back, no water, because I couldn't fill it in the Mexican airport because the water wasn't "potable" and I refused to pay $5 US for a tiny bottle of water at the little stands inside the security zone.
Have a good flight back!