Volumes have been stated on this topic, and the bickering and face-offs about where the "hot" video slots are positioned in the casino are still on-going – over sixty years after slots were 1st installed in gambling dens.
The traditional rule is that the more favourable slot machine games were put just inside the main entryway of the casino; so that folks going by would see real jackpot winners … be aroused to come unto the gambling floor and play. Our interpretation is that this is no longer true.
Almost all of the major casinos presently are huge complexes and it’s no longer possible to see inside from the sidewalk, so there’s no longer a reason to situate the ‘loose’ slot games near to any of the doors.
An additional traditional rule is that loose slots are put on the major aisles inside the casinos, again so that more potential players could see winning jackpots and be inspired to play. Notably however, 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!
Today, casinos are constantly changing their perspective about where to place the loose slots.