I've been to Fox a few times. A couple times at this location and once at another location. The other location (in North Phoenix maybe?) blows this one away in terms of service, and well, pretty much everything else.
The food here is okay. I tend to stick with the bacon cheeseburger here because it is usually pretty decent and it comes with their yummy fries. They've never really messed up my food here, so that's a good thing. I haven't had anything that was much of a standout here, but it is solid food.
The service on the other hand, is terrible. The times I have been here, I have been completely ignored after being seated. I have had to track down a server to get someone to at least take drink orders. They are usually pretty unattentive too. It could be worse I guess. Just never go when there is a crowd, as the servers have no idea how to handle that volume of patrons. This strikes me as so weird considering they are nearby two major sports venues as well as a movie theatre.
If you are hanging out at Westgate and get hungry at a non-peak eating hour, you should try Fox. They have a fairly interesting menu and the food is usually pretty good. Just don't expect stellar service.