Books have been stated on this issue, and the conflict and feuds about where the "hot" slot games are located in the casino are still taking place – sixty years after slot games were first placed in gambling houses.
The traditional rule is that the very best slot machine games were put just inside the entrance of the casino; so that everyone walking by would be able to see jackpot winners and be impressed enough to come into the casino and play. Our sentiment is that this is definitely no longer so.
Just about all of the big name casinos today are behemothic complexes … now you can’t see inside from the sidewalk, so there’s no longer a reason to put the ‘loose’ slot games close-by any entrances or exits.
Another standard rule is that loose slot machine games are placed on the major aisles inside the casinos, again so that more people could see winning jackpots and be energized to play. Notably though, 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 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!
In recent times, casinos are constantly changing their perspective about where to place the loose one armed bandits.