Wayne,
I guess everyone has a variant of some sort of money manegment plan. I remember when I wouldn't even let the machine store credits. I wanted the money in the tray. I felt this helped me, (as in the machine didn't know how much, ahead I was). But in truth, it did help me on those slot machines, but in a diffent way. It slowed down my play while I fed in all those coins. Less exposure to the house edge, was less I lossed.
Where in AC are these coinless VP machines? I don't visit regularly, and there are some casinos in AC I haven't been in for a long time.