Finally made it there today and had an excellent lunch. Went with the Taco Platter ($11.95) since it comes with beans and rice. For my tacos, I picked the Barbacoa and Al Pastor. The tacos were excellent with very flavorful meats. Rice was OK, not spicy, but tasty. The beans! Oh the beans, really well-executed BBQ beans that were not al dente but not mushy either. It was a generous serving.
http://thedailylunch-woburn.blogspot.com/2018/06/el-rincon-de-moodys-waltham.html