They should be for positive encouragement. This allows your friends to have fun playing the machine.
Remember how cool Charlie was in the 70's with the team of Angels? The gambler will spend a associated with time playing the machine even if the machine spits out merely takes a simple few rewards. https://gamebet88.org/789club-la-gi-tat-ca-nhung-gi-ban-can-biet-ve-san-choi-789/