2-Hour
$6
24-Hour
$8
3-Day
$20
30-Day
$65
Those are THE best rates for any kind of transportation you will find in Vegas.
My girlfriend and I walked for the first two days.. everywhere.. and I mean everywhere. A month later my feet are still blistering out. TMI?
Yea probably TMI.. but alas, it's the truth.. and then for the last three days we bought a three day pass.. thinking that it would have been only for three business days.. but it is literally a 72 hour pass!
Pro tip right there.
The buses while perhaps not driven by the most hospitable people in Vegas all the time.. are clean and run every 15 minutes or so. There wasn't a time they weren't packed, so be prepared to stand.
Also there are bus pass station at every stop and they are pretty easy to read.. if not a little dirty.
The biggest plus of the deuce.. is the fact that it runs from Fremont street to just in front of Mandalay Bay.. it's the only public transport that does. And don't even try to tell me the cabs are a great alternative.. too much money!
A great job by Vegas to give a viable travel option.