Books have been written on this topic, and the disquiet and feuds about where the "hot" slots are located in the casino are still passionate – sixty years after slots were 1st installed in gambling dens.
The traditional rule is that the more favourable slot machines were located just inside the main door of the casino; so that fun seekers passing by would see real jackpot winners and be stirred to come into the casino … play. Our sentiment is that this is definitely no longer true.
Just about all of the mega casinos presently are monstrous complexes … you no longer can see inside from the sidewalk, so there’s no longer a reason to place the ‘loose’ slots in close proximity to any entrances.
Another classic rule is that loose slot games are positioned on the major aisles inside the casinos, again so that more people could see winning jackpots and be roused 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 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 slot games.