Volumes have been stated on this matter, and the debates and squabbling about where the "hot" slot machines are located in the casino are still there – more than sixty yrs after slot machine games were 1st installed in casinos.
The traditional rule is that the most favorable slots were located just inside the main entry of the casino; so that folks passing by would see actual jackpot winners … be intrigued enough to come inside … play. Our reckoning is that this is definitely no longer so.
Practically all of the big name casinos presently are super-colossal complexes and now you can’t see inside from the sidewalk, so there’s no longer a reason to have the ‘loose’ slots close-by any entrances or exits.
Another classic rule is that loose slots are placed on the major aisles inside the casinos, again so that more folks could see winning jackpots and be galvanized to play. Nonetheless, 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 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 philosophy about where to place the loose slots.