If you campers want a softer introduction you could try riverwood downs
We have camped there just ask to be in the paddock and not on the river, camp sites are small and the paddock is flatter. Riverwood is great for first timers because it has plenty of under cover areas if it rains including indoor tennis, couple of free pool tables bar and restaurant. The rivers good for swimming in also.
It has all the amenities of a caravan park without the caravan park feel.
Wolondilly river would be ok as well as long as you dont get the owners on a bad day