Mate I've been to Scenic Rim Adventure Park http://www.scenicrimadventurepark.com.au/contact.html. They allow dogs no worries as long as they are kept under control, open camp fires and you can retrieve wood from the nearby bushland (good quality and heaps of it). It will take 2:37 minutes from the Sunny Coast according to google maps.

I went there this year in September and it was quiet as a mouse, no one else there on the weekend!