Terminal 3 near gate A14. You can order and pay using the iPads installed at each seat. I love the fact that they have a build your own veggie burger option as well as onion rings and beer which I ordered. The beer was the English Bay Palestinian Ale which was OK. Get used to the fact that they will come to you and say they ran out of this or that. It happened to me with my original choice of beer as well as the type of cheese on my burger.
One thing I didn't like was since you pay up front you have to tip up front as well which doesn't give incentive for good service.
As a whole, let's keep in mind this is an airport restaurant. The food, service, and process were really good.