Moreton Island is a beautiful, accessible and isolated island just an hour or so from Brisbane. Great spot for camping. If you are very experienced with a 4wd there is a lot to see. If not you don't have to go far to enjoy yourself here. There are shops here but if you don't have transport you should take everything with you.
At sunset every night dolphins swim to the resort down the beach from the Wrecks for a feeding. You can go and watch the dolphins getting fed. If you are camping you can jump in the water near the Wrecks around sunset as the playful dolphins make their way over to the resort. You can swim with the dolphins every night.