Maybe you can add to it as what are you think we keep on coming back as if we are under the spell of this big casinos?
I have seen a video on YouTube where the casinos in Japan give bonus SPA and free massages to their player, I forgot the name of the casino, but if this is real, of course, it will add the experience and addiction for players to come every day just to enjoy the massage. Yes we know, we don't need to come to the casino just to enjoy SPA and massage, but the pleasure is a different thing if can relax with the points we got from playing at the casino, right?
Provably this offers usually happen to those Hotel and spa casinos since provably that they would offer such service so that their gamblers will get attracted to those things they can offer. Some give huge less for their accommodation and other benefits that their players could get if they gamble in their casino.
Also some use beautiful girls entertaining people since this is also one way to attract lots of male gamblers to come in their casino. This is just common methods used by the casino and for sure there are lot more ideas implemented since for sure that they know how they can make people feels to comeback and gamble again in their casino.