are you between vegas and pahrump? maybe you need to target folks in the area of their origin. if they wake up, and drive the 40 miles to work, catch them with ads, at their town. or visa-versa, coming home, with dinner in hand. hit them with ads at work…discount for certain casino workers, e.t.c.
point is, know your target, what they do and when, then you will know how to reach them.