I do not know the differnces between VIC and SA, but if you are planning on selling food, there is a LOT more to it than you realize

First up, you are planning on serving food, you need to do a food handlers course
Someone on the premises needs to be in charge, they will then have to do the food supervisors course

How is your kitchen? Everything tiled and sealed?
I hope you do not have pets, any hint that they have been in the food prep area is a no-no

You will need to contact your local council to get their guidelines on operating a food premises

How are the pinball machines? You will need to get an electrical safety inspection done on them (every 6 or 12 months)

How is your insurance? You will need public liability insurance if you have paying customers