1. A method of operating a gaming system, the gaming system including a controller configured to communicate with at least one gaming machine, the at least one gaming machine including at least one display device operable to display a game upon placement of a wager having a monetary value, the method comprising: (a) causing the at least one gaming machine to: (i) enable a player to make wagers on plays of the game, (ii) display said plays of the game, and (iii) track said wagers made by the player for providing the player with player tracking points; (b) additionally tracking at least one activity in association with the at least one gaming machine; (c) determining if the tracked activity reaches a designated level; and (d) if the tracked activity reaches the designated level, causing the at least one gaming machine to display an indication to the player that the player has obtained a designated amount of a promotional currency in addition to said player tracking points, said designated amount of promotional currency associated with a point-of-sale and having a redeemable value for part of a purchase of a good or service at the point-of-sale, the redeemable value being less than a purchase cost of said good or service.