I ride at Golden Grove and occasionally other parks like the City and West Beach.. I haven't ridden in ages though.
All the Adelaide riders should have a sesh at Grove or City haha that would be sweet
Kings Baptist School in Golden Grove is pretty good.. Main thing there is a big 3 stair but theres a few other things too. I haven't really found too much good stuff in my area to ride its all kind of average, keep looking though
I live in Golden Grove which isn't far from Adelaide as in the City.. There's a few good parks around here like Golden Grove, City Skatepark, Seaford. That's just to name some of them.