We are traveling in March to Brisbane to visit our son who is studying in Robina. We would like to see the area where he lives but have no interest in theme parks, just the natural beauty. Should we remain in the gold coast area or go to the sunshine coast as well. We also are thinking about Cairns and a day trip to Lizard Island. We also plan to take our son to Sydney. We have two weeks to fit it all in. Any suggestions would be greatly appreciated. Thank you.