Volumes have been said on this topic, and the conflict and disagreement about where the "hot" slot games are located in the casino are still on-going – sixty yrs after slot games were 1st placed in gambling dens.
The standard rule is that the more favourable slots were located just inside the main foyer of the casino; so that potential players walking by would be able to see jackpot winners and be keen enough to come into the casino … play. Our conclusion is that this is definitely no longer the case.
Most of the major casinos today are humongous complexes and it’s no longer possible to see inside from the sidewalk, so there’s no longer a reason to put the ‘loose’ slot machine games in close proximity to any entrances or exits.
An additional traditional rule is that loose slot machines are located on the major aisles in the casinos, again so that more persons could see winning jackpots and be roused to play. Interestingly though, we find that this also is no longer a universal rule.
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 slots 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 slot machine games.