Thanks for that warning, teach8. that should not have happened.
We always take the shuttles from Airport to hotel. It seems hit or miss with companies, and whether you get one that leaves the airport fairly quickly or sits there for 25 minutes waiting to fill up. And which hotels will be first and last stops. From now on, though, I will confirm with the ticket person that my Strip shuttle is not also going the Downtown route!
We attempted to shuttle BACK to the airport once. Never again. They didn't show at the airport for 30 minutes after the time they said. We got a cab.
By the way, I also have never, in 30 years of staying at Harrah's properties, known of a Harrah's shuttle to the Airport.