A family weekend in Brisbane

Thanks to a soccer bye in early August, we are planning a family weekend in Brisbane.  We are going to see the A to Z of Animals in War exhibition at the museum, and the Surrealism exhibition at the Gallery of Modern Art. We will probably squeeze in some indoor rock climbing too, because it is something that all three kids and their dad enjoy. (And I am very content to be belay below!)  Does anyone have any suggestions about fun places we could go as a family? Or interesting/fun places to eat?