Yep Maz - definitely Sea World would be great for all of your darlings. And it does have quite a few rides that would keep them all amused as well as some incredible shows. Another one I don't know if anyone's mentioned - if you want to go up to drive up to the Sunshine Coast - Australia Zoo. We went there last year and it was absolutely awesome. We also paid an extra $50 on the day and were able to go in the Giant Tortoise enclosure which was brilliant.

Are you staying on the Gold Coast?