Went to El Mariachi for lunch on Saturday. Service was enthusiastic and friendly. We got the guac and chips for an appetizer, and the Baja tacos and the Tacos al pastor. Everything, including the guac and chips is made in-house, and was delicious. If I have a complaint it's that the beer list needs major attention. It would have been nice to see a good variety of Ontario beer styles on tap instead of bland Anheuser-Busch stuff like Rolling Rock and the like that all taste like one another.