Hi Pat
Looking at the website the cruise starts at Yichang which is nowhere near Wuhan. JWB has sent you a message to say that the coach transfer takes several hours from Wuhan to Yichang. According to the Yichang web site the train journey from Wuhan to Yichang takes over 5 hours so how long it would take a coach is anybodys guess. My guess would be 7and a half hours, but it depends on the state of the roads. What amazes me is that there is an airport at Yichang but JY do not use it. Maybe there are no flight timings that connect with the ship.
I know one thing, all the travelling will not spoil the holiday, just add to the Chinese Experience.
Best wishes
Peter