The Monorail in Vegas provided access to a backside of Vegas you do not normally see if you have always been a Strip visitor. They have access from Sahara to MGM through a backdoor path behind each hotel on the east side.
Staying at off strip hotel can now be a consideration as the monorail making it less inconvenience, and you can avoid the road traffics during rush hours. I always end up riding the monorail if I was in town for the convention near the LVH since they got a monorail station at it. Too bad they do not have another station closer to the Sands Expo near the Wynn area, I found myself having to travel between the two places quite often as more events occur on the same week recent years.
If you ride more than three trips within 24 hours, the day pass already worth the deal, and the multi day pass made things even better. The trains all seem clean and nifty, no sign of vandalism like most public transportation. Everything from ticket vendor to entry and exit were automated, they may have one staff at the entry/exit area during peak hours, but that was all the people I have seen.