Thanks seat_4D.
Actually is there anything worthwhile to see in Whyalla for a few hours?
I also have the option of taking the morning flight out, stick around in Whyalla for a few hours, and then back to Adelaide late afternoon. This will be on a Sunday sometime in Jan 2016.
If I did this, I do not intend to rent a car but simply order the taxi on board to get me into town and make an arrangement with the taxi to send me back to the airport later that day.
Cheers, Gerald