The longer you are in the casino, the higher chances that you lose your money. They make you feel comfortable inside the casino so that you won't think of leaving, that's their strategy.
I have that point. They wan't to eliminate gambler's tress especially when they are losing, by giving a comfortable place to stay they change their minds and instead of being depressed, it change into nothing. The opportunity to give good services to their clients will help to make them known and win the business competition.