Never play at work, but does require quite abit of free time for the best rewards. The gold chips accumulate fast if you play daily and IMHO all the rewards are quite nice. I think you've made the right decision in deciding to play
MyVegas is a great game! I have redeemed points once and the process was quick and easy. We got 2 tix to Zarkana at Aria and the seats were great...$300 tix for nothing, you can't beat that!