Volumes have been said on this issue, and the conflict and discussion about where the "hot" slot machines are positioned in the casino are still rampant – over 60 years after slot machines were 1st installed in casinos.
The quintessential rule is that the better slot machine games were positioned just inside the main entry of the casino; so that people walking by would be able to see jackpot winners … be captivated to come inside and play. Our deduction is that this is no longer the case.
Nearly all of the major casinos nowadays are humongous complexes … it is not possible to see inside from the sidewalk, so there is no longer a reason to put the ‘loose’ slot games near to any exits.
An additional classic rule is that loose slot games are put on the major aisles inside the casinos, again so that more fun seekers could see winning jackpots and be galvanized to play. Importantly however, we find that this also isn’t a universal rule any more.
What casinos found over the years is that people walking down the busy aisles were frequently on the way to somewhere else. If they played slots at all, they would simply put in their loose change because they happened to be walking by. Win or lose, they would very often not stop to keep playing. And the last thing a casino wants is for someone to win a jackpot by playing only a few coins and then not stay to put it all back in!
Today, casinos are constantly changing their perspective about where to place the loose slots.