Casino you say.... Ummm! There was a casino in hurstville?
Perhaps a disused club of some description, but a casino.... No
Does anyone even bother to do any research before asking questions like this? It took all of 2 minutes to find something along the lines of what your looking for.
Part of being an explorer is doing your homework, reading news articles and other exploration threads, chasing leads and doing some leg work.
Just coming on here and asking..... "Where is such and such a place is going to be met with sweet f/a 9 times out of 10.
And guess what, the more vandals, graphers and twelvies that come here looking for locations in this manner the less willing people become to help.
Sorry to sound harsh, but you need to do a bit of your own leg work and stop expecting everyone to just hand out locations like jelly beans at the doctors office.