This, is an excellent Mexican fast food restaurant.
We went as a group of 5 tourists from interstate.
We were served by Rainy, Rizky and Lily. These are 3 of the kindest and generous servers, who really piled on the food. They also suggested appropriate alternatives for dietary requirements eg vegan, gluten free, nut allergy. Despite being close to closing time, they were extremely patient and delivered excellent service.
Food was excellent, especially the guacamole which had a dark texture and full, resonant taste.
The whole experience was great and homely.
Thus, I highly recommend Zambrero Mount Gambier.