Went to Sydney's Luna Park and found a large range of sited games. Luna Park entry varies and if you are just wanting to play the pinballs etc - recommend the $12.50 in to Coney Island section only and then $1 games with most of them giving you 5 balls.
To get there, basically Sydney Harbour Ferries can drop you off at the front from all over the place .
Games in good condition, 1 pinball out of about 20 odd was down but a tech on site doing repairs. There were some really nice restored examples, plus some other shooting and pitch and bat etc.