The Vikki and Vance floor manager was hired to make the casino more approachable and guest friendly. The casino does this by having their floor manager give out special prizes.
The Vikki and Vance floor manager will give the Courier more chips to encourage the him/her to gamble. They will be given if the he/she wins some money. Winning too much and breaking the bank, will cause the floor manager to ask the Courier to stop gambling at that establishment.
Big Winner, Vikki & Vance: After winning 625, 1,250, and 1,875 chips from gambling, the floor manager will reward the Courier with special prizes. However, after winning 2,500 chips, he bans him/her from playing at the Vikki and Vance Casino.