When visiting The Gateway and eating in their food court, I like to eat at Taco Time. Taco Time has decent food for fast food Mexican. The meat that they use isn't seasoned too heavy. It is actually a little on the bland side so you can spice it up to your likings with the different salsa and hot sauce that is available. My favorite thing to order is their classic hard shell taco and a drink. I usually get the combo and it comes with 2 hard shell tacos, and order of their tots and a drink. I use their mild sauce on it and it makes a great quick meal!
http://www.tacotimenw.com/menus.php to Taco Time's website.