Cold Dos Equis and some guac... count me in! I have been to Tres Rios a few times now and enjoyed this during both happy hour and dinner time.
The last time we were there it was very quiet with only a few others in the restaurant. The bartender was very helpful in talking through the happy hour options ($2 tacos!) and suggesting what she thought we'd like most.
The guacamole has great flavor and when we've been there to share it they even bring it out in two bowls so we can have our own little portions and not worry about having to try to scarf it down to out-do the other person! Chips are a good level of salty and the drinks have always been good.
Definitely a place to check out on Carson St.!