HH would be a great place to take the family. We have not been for two years as it is a bit of a drive for us. Yet i will add it is well worth it.
We tented both times we visited up the back near the tennis court.
As you will know from the web site there are a number of activities.http://www.happyhallidays.com.au/
The pool is great, jumping pillow, mini golf and tennis and don't forget the train that drives around the park. The kids love that.
Our kids were 3 and 5 years old and had a ball. Clean camp kitchen and facilities.
It is a couple of minutes drive to the beach. One visit we did not even leave the park.
Sites are varied with the larger ones around the back. We easily fitted a car, box trailer, double dome 8+8 tent and tarp on our site. Lots of nice green grass and space.
The hosts and fellow campers are friendly and we would return to visit again.
(will try to add photos later).