The Cactus Republic, located in South Bank, has one of the best locations on Little Stanley Street. You not only get live music from street buskers, but there are throngs of people going by all the time; never a dull moment for people watching.
Chicken Quesadillas, Chili Enchilada and Jalapeno Poppers!
The fare is Mexican street food, the idea being that it is easy to eat, and doesn't take a lot of your time if you are in a rush to get to a show or catch the ferry. All of the food is made fresh, locally sourced and made on sight. The Jalapeno Poppers are tasty, and quite filling, so sharing a plate of them would be a good option unless you have a huge appetite. The Chilli is tasty and served on top of a bed of rice or you can also get the Chilli inside of an Enchilada.
You can take the whole family and everyone will come away full. Then you can head back to the beach or go to the Designer's Market. The proximately to all that is Southbank is right there for you. You can go for a swim and build up an appetite, or you can stroll along the river walk and then come for a marguerite. They have several flavours to choose from and you can have them frozen or not. You can come and spend the afternoon with friends checking out each other's opinions on which one is their favourite.