Lunch in 15 minutes? Ha! I've had lunch there twice now, at two different visits, and the first time took over an hour and a half, the second over an hour. The food is mediocre for the price (although the bread with the dipping oil/balsamic is quite tasty), and the service leaves A LOT to be desired. It usually takes a looooong time to have your order taken, and if you want a drink refill (coffee and iced tea), you'd better start sucking on the ice cubes, because they will melt before you're going to get more.
I love the Green Valley Ranch resort, but am sorely disappointed in this restaurant.