Max Rubin is a unique figure because he has been both a player and a consultant for casinos. As the author of Comp City, he taught players how to maximize casino comps — the free rooms, meals, and rewards that casinos offer to regulars — without necessarily risking more money. Today, Rubin works with casinos to train staff to spot advantage players and to develop loyalty programs. He also serves as the host of the Blackjack Ball, an invitation-only gathering of the world’s most elite professional gamblers.