Quoted from goatdan:Novices don't really play multi player games. A booth at a local con is also different.
Ive operated games. The number of games that are left with ball three in the shooter lane thanks to a ball save shows that it is a confusing thing. Game making the last twenty or so years has been a huge clash over trying to attract new players with more simple game play, or getting long time players to come back again and again. Both have strategies to them but ball saver is actually a long time player strategy, not a new guy one.
I operate games, but know for a fact that there are a few credit sharks among my regulars who will play any balls or credits on any machine. I show up to a bank of games with zero balls or credits waiting every single time. The flip side of that is that one particular player will encourage kids to pull up a chair if they seem curious. He talks them through what he's doing and a little bit of the why. Actually most of my players will do something resembling this to anyone who shows a little interest.