Standard Mexican food...
... in an unauthentic, cafeteria-like atmosphere.
This restaurant is typical of the Scottsdale restaurant trend of constructing massive dining halls that seem like they could seat 2000 people, filling it with [insert theme of the week here] decorations, and offering ordinary menu items for the purpose of raking in tons of cash. I eat here when I or the friends I'm with am in the mood to eat standard Mexican food and don't feel like driving somewhere else.
This place should never be mistaken by out-of-staters as representative of Mexican food in Arizona. Gardunos was created for tourists and people like me who only have time for standard food.
The service is average. Avoid the buffet.