Showgrounds are often half the price of caravan parks, and most are dog friendly with large expanses of grass for a dog or children to play and a place for the active nomad to jog or work out.
The criteria for showground caravan sites differs from location to location and Alice Springs it is when the other caravan parks are full or if they will not accept you due to your dog or rig, being too large. At Maleny QLD, you can only stay three nights.
The conditions at showgrounds are rarely top class amenities block but the expense of grounds and freedom outweighs all the disadvantages, in my opinion.
These are a few Showgrounds, I have heard recommended and we have stayed at many of these.
Alice Springs, NT
Brocken Hill (St pats race course) NSW
Canungra Recreational Ground Qld
Glen Innis NSW
Grafton racecourse NSW
Gin Gin QLD
Lucindale SA (footy oval)
Strathalbyn SA (footy oval)
You can contact the shires in advance to find out if they allow camping at the show grounds and the available dates.
This information was correct at time of posting, pleas check with the shire before arriving to make sure they are allowing caravans at the time you arrive.
Showgrounds are used for many community events and will not always be open for caravans.