I'm a Las Vegas resident who lives about 5-7 miles from the airport.  With my father visiting and departing at 6:15am this morning, he needed to catch a cab at 4:30am.  We called first at 3:50am and were told a cab would arrive in 15-20 minutes.  At 4:30am we called back and were told a cab would arrive in 10 minutes.  At 4:46am we were forced to wake a sleeping baby, load her in the car seat, and drive to the airport.  Not once did anyone call our phone number.  We are very disappointed in the service.  If they avoid local pickups because the fare isn't enough money for them, then shame on you.