I'm a big fan of good tortilla soup & fish tacos, so I ordered both here.
They were mediocre. If I was here again I'd try something else.
If you're in LV and want a good fish taco go to Border Food Juarez/El Paso at 412 N. Eastern. You get real fish (not some rectangular deep fried hunk), lightly floured/fried & served with all fresh ingredients. I would eat here every day if it were closer to my house.
If you're in LV and want good tortilla soup get in a car and drive 8 hours to the bay area of CA and go to Una Mas. They take a delicious broth, add chunks of GRILLED chicken, SPOON IN fresh pieces of avocado, and sprinkle it with grated cheese & fresh strips of tortillas. They assemble each bowl to order. Best tortilla soup EVER.
One thing I'd definitely get if I went back to Border Grill is a drink that went past me on a tray. I have no idea what it was but the glass was trimmed with toasted coconut and it looked great.
UPDATE 2016:
I went back the spring of 2016 & ordered fish tacos again. They came with grapefruit on them! GRAPEFRUIT?!? And not just any kind, but the sweet pink kind. FYI grapefruit on a fish taco is awful :(