Horrible. The 24 hour unlimited rides pass for residential and The Strip routes ($7) is good, but this bus route is not. The Deuce is a double decker bus that serves The Strip and Downtown. There is a bus called Strip Express that runs along the same route, but with less stops. Take that bus instead.
The 1 star is for the slowness of this route. The bus stops are too close apart and it appears each stop is full of people getting on and off. I made the mistake of taking this route to and from Downtown. It took over a hour each way. Ridiculous. Left feeling that it would be quicker to just walk. Given this, I did not take the Deuce for the rest of my visit, instead relying on the CityCenter tram that runs from the Monte Carlo to the Bellagio.
Las Vegas has got to figure out a better way to move people. The time spent on the Deuce was a big fat turd. Waste of too much time.