Volumes have been set forth on this subject, and the debates and feuds about where the "hot" slot games are placed in a casino are still happening – sixty yrs after slot machine games were first placed in gambling houses.
The classic rule is that the better slot machines were installed just inside the main entrance of the casino; so that individuals walking by would see real jackpot winners … be enticed to come into the casino and play. Our philosophy is that this is definitely no longer the case.
Most of the mega casinos presently are grand complexes and you can no longer see inside from the sidewalk, so there is no longer a reason to situate the ‘loose’ slot machine games close to any exits.
An additional classic rule is that loose one armed bandits are located on the major aisles in the casinos, again so that more potential gamblers could see winning jackpots and be influenced to play. Nonetheless, we find that this also isn’t 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 slot machines 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!
These days, casinos are constantly changing their philosophy about where to place the loose slot games.