Seeing as I work at Burswood Casino, it's a little disheartening for me too, seeing you need to be 18 to work in the casinos!
You are very lucky to have a sister there I think you should definitely check out the ones that PlonkeeMumma suggested

Julie, I'll have to come to the Kwinana one one day - with the horror mothers group I had, I am kinda shying away from mothers groups/play groups etc