Volumes have been set forth on this matter, and the conflict and discourse about where the "hot" slot machine games are positioned in the casino are still on-going – 60 yrs after slots were 1st placed in gambling houses.
The classic rule is that the very best slot machine games were positioned just inside the door of the casino; so that persons passing by would see actual jackpot winners … be baited to come unto the gaming floor … play. Our theorem is that this is definitely no longer the case.
Nearly all of the big name casinos today are giant complexes and you can no longer see inside from the sidewalk, so there is no longer a reason to position the ‘loose’ one armed bandits close-by any entrances or exits.
Yet another traditional rule is that loose slot machine games are placed on the major aisles in the casinos, again so that more people could see winning jackpots and be encouraged to play. Notably though, we find that this also is no longer a universal rule.
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 slot machine games 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 very 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 slot games.