Prep the ingredients per the instructions above.
Make the Guacamole: In the bowl with mashed avocado, add diced tomatoes, chopped cilantro, lime juice, garlic powder, salt, and pepper. Mix well until all ingredients are combined and the guacamole reaches your desired consistency.
Season the Beef: In a bowl, toss the thinly sliced beef with chili powder, ground cumin, garlic powder, salt, and pepper, ensuring that the meat is evenly coated with the spices.
Cook the Beef: In a skillet over medium-high heat, add vegetable oil. Once the oil is hot, add the seasoned beef slices and cook for about 2 - 3 minutes per side or until the meat is browned and cooked to your desired level of doneness. Remove the beef from the skillet and set it aside.
Warm the Tortillas: In the same skillet, warm the soft corn tortillas for about 20 - 30 seconds on each side until they become pliable and slightly toasted.
Assemble the Tacos: Divide the cooked beef among the warm tortillas. Top each taco with chopped fresh cilantro, diced onion, diced tomatoes, and shredded Monterey Jack cheese. Squeeze lime wedges over the tacos.
Place all margarita mocktail ingredients into a pitcher or drink shaker. Mix until the honey is dissolved. Adjust any of the ingredients as needed to taste. Chill in the fridge until you are ready to serve.
Serve the Meal: Arrange the Mexican street tacos on a serving platter. Serve the chips and guacamole on the side with marg mocktail. Enjoy your delicious Mexican-inspired feast!