is there any theme parks in or near adelaide ??
Theres Greenhills down by Victor harbour, which is a water park, I'm sure there must be others, but not sure where (haven't been here that long!).
Hope that helps
To the best of my knowledge, the nearest Adelaide has to a theme park is the Worlds largest rocking horse, which isn't exactly the sort of thing you mean.
It does NOT have anything the theme parks that are just south of Brisbane. No Alton Towers/ Thorpe Park here.
Sorry to be the bearer of bad news