Nice restaurant. The decor is fairly nice, but I didn't feel terribly out of place in shorts and a t-shirt. Service was good.
I was expecting this place to have more vegetarian options on the menu. There are a few, and the server suggested I replace the meat in a burrito with veggies (which I did), its just that I expected more options. None of the Family-style meals are vegetarian (though I suppose you could ask, as they seemed fine with going off the menu). But what I had was pretty good. First up was the guacamole. As several other reviewers have noted, Cantina makes their guacamole tableside. It was very, very good, the right consistency/flavor/etc. The only thing is that its $9, which seems really, really pricey to me (everything else seemed reasonably priced though). My burrito was good too. It wasn't anything fancy, just a burrito with sauteed veggies, rice, beans and queso.
So overall I liked this place. Probably closer to 3.5 stars, but I have no problem bumping it up to a 4.