My husband and I have rented a campervan to travel from Sydney to Cairns (from the 2nd to 15th January 2014).We have roughly worked out a route: Byron Bay, Surfers Paradise, Brisbane, Beerwah, Fraser Island, Airlie Beach/Whitsundays, Magnetic island, Mission beach, Cape Tribulation (Daintree). I realise we have pretty limited time so any recommendations/tips would be very much appreciated. We would like to include whale watching, swimming with dolphins (probably Seaworld) and snorkelling/diving somewhere along the way. Thanks in advance!!