I stayed at The Rio a couple of times in the past. But I think their downfall started when they stopped the courtesy buses to the Strip several years ago. Like many people staying there I had no car, so I ended up feeling trapped. They also stopped the Carnival in the Sky and other free entertainment that I enjoyed. Together with the constant hounding from Time Share Sellers, that was enough for me to change to a different venue.
I understand you, but there are 2 buslines, 202 on Flamingo via Strip and 104 to South Strip (Mandaley, Vegas Sign). Yes, the public transit isnt real good in Vegas.
100 out the door doesn't seem bad, but it probably has gone up a bit. I think I paid a little less than that back in June, and I'm betting prices are lower now cause the time of year.