First Thought: Since the recent addition to my family, my wife has joined the Chrysler Pacifica Auto Club

and has passed her Mini Cooper and club affiliations on to me(daily driver). While on the Mini site, I noticed that Mini On The Dragon is the same weekend as we are planning our trip. They had close to 500 participants last yr and are expecting over 600 this year. Nothing we can do about it, except rescheduling, which I'm not suggesting, but at least those making the trip know what to expect.
http://www.northamericanmotoring.com/motd-home
Second thought: The Smokie Mt chapter of PCA is hosting their local "Spring Thing", which is a typical PCA "show and drive" event for multiple PCA chapters. The location is Greeneville, TN, which is fairly close (approx 80 miles) from the exit end of the TOTD. The link to the site is :
http://www.pca.org/smt/2007SpringThing/2007flyer.pdf
I may crash the party
Last thought: I think taking the Cherohala Skyway for the return trip back to Robbinsville is a great idea. Definitely worth considering