Quoted from jwilson:
Replays and Match are only important to pinheads. The general public don't know they exist and don't understand them, so it's to the op's advantage to turn both off, because pinheads are only like 10% of the customer base.
Agree that general public doesn't know they exist ... until they get one. Thus, I disagree that it is to the op's advantage to turn them off.
I believe it is to the op's advantage to have them on. I am living proof that winning free games (via match, winning a replay, or being awarded a special) incentivized me to play more and put more money in. Additionally, if it weren't for those free games I'm confident my interest in improving my skills and learning the games would not have been piqued and I wouldn't have become a pinhead.
Also, the few times I've played on location and the award was an extra ball instead of a credit I felt seriously cheated.
If they were turned off completely I'd visit another place to play (provided one were around). I even do this around here b/c one operator sets the games up for only 1 extra ball. If I've played well enough to earn it I sure as hell want that extra ball b/c by that point I'm likely playing for progression in the game not just a distraction.