Books have been stated on this topic, and the conflict and feuds about where the "hot" video slots are positioned in the casino are still rampant – 60 yrs after the slots were 1st placed in casinos.
The quintessential rule is that the very best slot games were installed just inside the main door of the casino; so that folks going by would be able to see actual jackpot winners … be drawn to come unto the gambling floor … play. Our disposition is that this is definitely no longer so.
Many of the mega casinos today are mammoth complexes and you can no longer see inside from the sidewalk, so there’s no longer a reason to put the ‘loose’ slot games close to any exits.
Yet another traditional rule is that loose slot machine games are placed on the major aisles inside the casinos, again so that more fun seekers could see winning jackpots and be motivated 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 slot games 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 slot machines.

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