American Queen - Nashville question

We are booked on the Am Queen St Louis-Nashville cruise in October.

I have just discovered that our last stop (which is supposed to be Nashville) is actually Clarksville, Tn, an hour away from Nashville.

Has anyone actually been on an American Queen cruise that ended in Nashville/Clarksville? How do you get from the pier in Clarksville to the Nashville Airport (BNA)? And how early of a flight would be realistic?

I found out the answer for transportation to the Nashville Airport (BNA) from Clarksville and thought I'd post it in case anyone else needs to know.

American Queen has a direct shuttle from where they dock in Clarksville that goes to the Nashville Airport for $25 pp. It arrives at the airport at 9:30 am. You can book it online at http://www.reservemyexcursions.com/ This website is also where all the premium shore excursions are booked for Am Queen.