Volumes have been stated on this item, and the debates and face-offs about where the "hot" video slots are installed in the casino are still happening – 60 yrs after the slots were 1st placed in the casinos.
The classic rule is that the best one armed bandits were put just inside the main entry of the casino; so that folks walking by would be able to see real jackpot winners and be influenced to come unto the gaming floor … play. Our point of view is that this is definitely no longer so.
Just about all of the mega casinos nowadays are grand complexes … you can no longer see inside from the sidewalk, so there’s no longer a reason to situate the ‘loose’ slots close to any doors.
Another standard rule is that loose slot machine games are positioned on the major aisles in the casinos, again so that more persons could see winning jackpots and be energized to play. Importantly 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 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!
These days, casinos are constantly changing their philosophy about where to place the loose one armed bandits.