Volumes have been said on this topic, and the disquiet and arguments about where the "hot" slots are positioned in the casino are still bubbling – over sixty yrs after the slots were 1st placed in gambling dens.
The traditional rule is that the very best slot games were placed just inside the entry of the casino; so that persons walking by would be able to see jackpot winners … be aroused to come unto the gambling floor … play. Our theory is that this is not so anymore.
Most of the mega casinos today are titanic complexes and you no longer can see inside from the sidewalk, so there is no longer a reason to have the ‘loose’ slot machine games close to any doors.
Another traditional rule is that loose slot machine games are located on the major aisles inside the casinos, again so that more persons could see winning jackpots and be inspired to play. Notably 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 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!
Nowadays, casinos are constantly changing their perspective about where to place the loose slots.