Best strategy for maximizing play at VIC casinos?

I'm planning a trip to Victoria and I'm really interested in visiting a couple of the major casinos. I've done some research on slot machines, but I'm not sure where to start with a solid strategy. Does anyone here have experience with loyalty programs or specific machines that offer better payouts? I'm hoping to get the most out of my time there without spending a fortune. Any tips on avoiding common pitfalls or finding the best value would be greatly appreciated. Thanks in advance!