When we were in Adelaide to pick up our new 18.57-6, we stayed at Big 4 west beach caravan park. It was great, 2 x inflated bouncey pillows, Kids can scooter, ride and play all over the park.
Has 2 pools, a swimming and kiddy pool.
Two play grounds, also a kids entertainment complex..
Has a Cafe at the entrance that you can grab a meal or even a cold lemonade or two (Mr Jack's). The cafe also sells bottled vino to park users, great for those husbands who forget to grab a bottle of red when out in town (Me!!!!!)
Would reconmend it as it is not to far from the city
Have heard though it can get quite full during the summer months...