Hvaen't camped at the Bunya's for about 20 years. These days we find renting one of the holidays a good option.
Dandabah is open style camping area, well grassed and has toilet and showers. There is also a kiosk and cafe nearby.
EPA recommend not to pull a trailer / caravan etc up the hill. Hence why we rent out a house. Some of the houses can accomodate large groups and have things like pool tables, spa's etc.
It can be cool (even at Christmas time) so be prepared.
Everyone feel free to add.