you are very likely to be the only non hispanic person in one of these.. that is if youre non hispanic. lol. a mexican guy i work with has been trying to get me to the one place more authentic which is in tacoma somewhere. i dont even know the name of that spot.
at any rate, these people do it up really really good!
http://elrinconsito.com/ lots of spanish being spoken, lots of hispanics and they even play the spanish channel on televisions. enjoy.
j.r.