This place is a hit for families during summer. Really cool water slides and over the last few years they have really added a lot more rides.
It's a fun day out for all ages. The food is actually pretty expensive there so it is much better if you can pack your own lunch and save some cash but other than that it is a good day out.
If you have the Entertainment book for the Illawarra region there is usually a discount coupon in there that you can use which I've found good value in the past.
You can get public transport down there or you can drive as there is plenty of parking.