Books have been set forth on this topic, and the debates and discussion about where the "hot" slots are positioned in a casino are still there – sixty yrs after the slots were first placed in gambling houses.
The standard rule is that the very best one armed bandits were located just inside the main entryway of the casino; so that people going by would see jackpot winners … be inspired to come into the casino … play. Our inference is that this is definitely no longer so.
Just about all of the big name casinos presently are gigantic complexes … now you can’t see inside from the sidewalk, so there is no longer a reason to place the ‘loose’ slot games near any doors.
Yet another classic rule is that loose slot machine games are located on the major aisles in the casinos, again so that more potential gamblers could see winning jackpots and be influenced to play. Notably however, we find that this also is not 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 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 machines.