Adelaide really is just as its portrayed, a big country town which can appear to be stuck in the 70/80's.
The best part is its easy to get around and virtually impossible to get lost in as its bordered by ocean to the west and south, the Mt Lofty ranges to the east, and if you find yourself too far north you'll end up in one of those blue plastic barrels that BA-XT mentioned, at which point getting lost will be the least of your problems...