Volumes have been said on this issue, and the conflict and interchanges about where the "hot" slot games are positioned in a casino are still ongoing – more than sixty years after slots were 1st installed in gambling dens.
The classic rule is that the better slot games were placed just inside the main entryway of the casino; so that persons passing by would see real jackpot winners and be inspired to come unto the gambling floor … play. Our frame of mind is that this is not so anymore.
Nearly all of the large casinos nowadays are herculean complexes and it is not possible to see inside from the sidewalk, so there is no longer a reason to have the ‘loose’ one armed bandits near any of the doors.
An additional classic rule is that loose slot games are installed on the major aisles in the casinos, again so that more people could see winning jackpots and be encouraged to play. Importantly 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 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 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 slots.