Take my hat off to anyone prepared to open up a pinny parlour.  I would love to have a crack at doing it but don't have the intestinal fortitude to have a go.

Would you be better off charging $1 a game or say $20 cover charge (adults) $10 (kids) to stay and play as long as you like and hopefully pick up some food and drink sales as opposed to someone walking in off the street, throwing in $1 having a crap game and walking straight back out the door?  It would be good to get some kids coming in with their Dad's and hanging around for a bit.  One problem I could see would be people hogging a particular machine or kids hitting the start button 4 times and walking away after the first ball.