There were two problems: slowness of processing my order and the food itself. I ordered a chicken cheesesteak with mushrooms. My friend and I ordered at the same place in food court of the Red Rock so our orders would come out the same time. It took an extra 10 minutes longer for my food. When I asked about my order they blamed the provalone cheese. Then they started cooking it.
The sandwich itself was missing the meat and cheese from a third of it. The chicken was dry and over all it was extremley salty.
If you are at the Red Rock don't go to Capriotti's.