Volumes have been set forth on this matter, and the conflict and feuds about where the "hot" slot machines are positioned in a casino are still there – sixty years after one armed bandits were 1st placed in the casinos.
The standard rule is that the superior slots were positioned just inside the main foyer of the casino; so that casino fanatics going by would be able to see actual jackpot winners and be intrigued enough to come unto the gaming floor … play. Our deduction is that this is definitely no longer true.
The great majority of the major casinos these days are mammoth complexes and you no longer can see inside from the sidewalk, so there’s no longer a reason to situate the ‘loose’ slot machine games in close proximity to any doors.
An additional standard rule is that loose one armed bandits are positioned on the major aisles inside the casinos, again so that more persons could see winning jackpots and be influenced 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 the slot machines 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!
Nowadays, casinos are constantly changing their perspective about where to place the loose slot games.