Volumes have been set forth on this matter, and the debates and ruckus about where the "hot" slot machine games are positioned in the casino are still intense – over 60 yrs after slot machines were first placed in gambling houses.
The classic rule is that the most favorable one armed bandits were located just inside the main entry of the casino; so that individuals going by would see jackpot winners … be convinced to come inside and play. Our interpretation is that this is definitely no longer true.
The majority of the mega casinos presently are titanic complexes … it’s no longer possible to see inside from the sidewalk, so there’s no longer a reason to situate the ‘loose’ slots close-by any doorways.
Yet another standard rule is that loose slots are put on the major aisles inside the casinos, again so that more people could see winning jackpots and be encouraged to play. Interestingly 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 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.