It ain't fast.....but if you aren't in a hurry (as in you aren't trying to get from Fremont Street to Manadalay Bay in under 50 minutes to get the last shuttle to your hotel located in BFE so that you don't have to shell out yet another $30 for cab fare but the Deuce is so slow you arrive with 2 minutes to go and have to race down the street in 4 inch heels knocking fanny-pack wearing grandmas carrying 3-foot tall margaritas out of your way in order to make it just as the shuttle is pulling away) then it's great.
$2 one way, $5 all day, takes about an hour to get from one end of the strip to Fremont Street in even the slightest bit of traffic. The people can be crazy, it makes a lot of stops and there is a great chance you will have the best bus driver ever, who, after yelling at people for infractions like eating, standing before the bus has come to a full and complete stop, and using the wrong door, says something awesome like:
"Watch your step out there and remember, I care about you!"