Volumes have been stated on this subject, and the conflict and feuds about where the "hot" video slots are located in the casino are still taking place – more than 60 yrs after one armed bandits were 1st added to the gaming floor in gambling houses.
The classic rule is that the very best slot machines were positioned just inside the entry of the casino; so that people walking by would be able to see jackpot winners … be drawn to come unto the gambling floor and play. Our frame of mind is that this is not so anymore.
Many of the mega casinos today are magnificent complexes … now you can’t see inside from the sidewalk, so there’s no longer a reason to have the ‘loose’ slot machines close to any of the doors.
Another classic rule is that loose slot machine games are located on the major aisles inside the casinos, again so that more fun seekers could see winning jackpots and be influenced to play. Notably 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 machine 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 slot machine games.