Volumes have been said on this topic, and the bickering and feuds about where the "hot" slot machines are installed in the casino are still bubbling – more than 60 yrs after slot games were 1st placed in the casinos.
The traditional rule is that the very best slots were installed just inside the main doorway of the casino; so that individuals passing by would see actual jackpot winners … be enticed to come unto the gambling floor and play. Our stance is that this is definitely no longer true.
Almost all of the major casinos nowadays are humongous complexes … it is not possible to see inside from the sidewalk, so there’s no longer a reason to position the ‘loose’ slot machine games in close proximity to any entrances or exits.
An additional classic rule is that loose slot games are put on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be encouraged 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 one armed bandits 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!
In recent times, casinos are constantly changing their philosophy about where to place the loose slot games.