We have done the serious planning, used the RACQ trip planner to calculate kms and time for the travel days and researched attractions for the days in between.
Although we have a night on the Gold Coast we are planning to have a wildlife and nature themed trip and so we are avoiding the big theme parks. We plan to do Australia Zoo and Currumbin Sanctuary, several museums (musea?) and Carnarvon Gorge on our way home.
