Their happy hour prices are nothing to complain about. The free chips and salsa are appreciated, and not bad at all. The actual food though, the shredded beef quesadilla and beef taquitos we ordered, left much to be desired. They weren't terrible, but also far from good. I can honestly say that Taco Bell does it better. If not for the happy hour prices, I perhaps wouldn't have left feeling as content as I did - or perhaps it was the margaritas (also on happy hour). Next time I'll probably just go just for those and the chips, and just leave the food out of it.
The server was friendly enough, but we didn't see her very much, and did a lot of waiting around for refills. The rainforest art on the outdoor patio wall is nice to look at, but the tables are small and look a little dated. Arriba could make a few updates to the look and menu and start drawing in crowds comparable to Oreganos next door.