Just came across this - hope the link to FT is OK.[urlhttp://www.flyertalk.com/forum/united-mileageplus-consolidated/1511565-ua-sfo-hi-80-return-23th-31th-oct.html][/url]
I just booked CVG-LAS and have a confirmation number. I would recommend using a new account with no mileage in it. Not sure this will be honored but let the fun begin!!