Volumes have been set forth on this matter, and the bickering and squabbling about where the "hot" video slots are positioned in a casino are still ongoing – more than sixty years after slot machine games were first placed in gambling houses.
The traditional rule is that the superior slot machine games were put just inside the main foyer of the casino; so that casino fanatics passing by would see actual jackpot winners … be impressed enough to come unto the gambling floor … play. Our sneaking suspicion is that this is not so anymore.
Just about all of the major casinos presently are titanic complexes and now you can’t see inside from the sidewalk, so there’s no longer a reason to position the ‘loose’ slots close to any doors.
An additional traditional rule is that loose slot games are installed on the major aisles in the casinos, again so that more potential players could see winning jackpots and be energized to play. Notably 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 one armed bandits 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!
Nowadays, casinos are constantly changing their perspective about where to place the loose slot games.