According to their sign they are "modern Mexican"...which basically means "same things as other Mexican restaurants except a fancier setting". Just kidding, that's not nice - there are several options on the menu that you wouldn't see at La Fiesta but let's not get carried away, it's not a new form of cuisine.
I was happy to find Mole Enchiladas on the menu since mole is friggin awesome! I wasn't super amped about these babies though...worth trying but the mole had a little too much tang to it and not enough depth of flavor.
The guacamole should definitely be purchased. There is a guac-girl who comes around and makes it at your table. She'll use 1 and a half avocados and ramp up the spiciness however you like it. She also has cilantro in her ingredient cart which is yummy.
Service was subpar. Our waiter was not very attentive - seemed to have too many tables to deal with.