Volumes have been written on this item, and the disquiet and face-offs about where the "hot" slot machines are placed in the casino are still there – over 60 yrs after the slots were 1st placed in gambling houses.
The traditional rule is that the superior one armed bandits were placed just inside the main foyer of the casino; so that folks passing by would be able to see jackpot winners and be impressed enough to come inside … play. Our philosophy is that this is definitely no longer the case.
Nearly all of the mega casinos presently are oversized complexes and it is not possible to see inside from the sidewalk, so there’s no longer a reason to place the ‘loose’ slot machine games close to any doorways.
Another standard rule is that loose slot machines are placed on the major aisles in the casinos, again so that more people could see winning jackpots and be galvanized to play. 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 the 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!
Today, casinos are constantly changing their philosophy about where to place the loose one armed bandits.