The few places we have camped around that area was at Lees reserve there is about four different camping areas around here they are all along the rive from memory the river is called The Dumaresq !!! it is the back way between Yelarbon and Gundy.Good road when we were there last better than the H/ Way was.
The other place is at the show grounds( Boundry Rd ) it was it is $25 per night with power care taker on site no need to book just rock up.
There is hot FREE showers at the The Water Park. (things change so quickly regarding camps and showers and things so can only tell you from our last visit there. Also good cheap meals a lunch times ( week ends ) at RSL.
Yelarbon $10 but such a clean nice spot to stop. They were doing more work on the amenity block in March this year when we were there. Our regular stop when going to family at Bellata.