http://radiok0m.wordpress.com/ for the details.
The equipment and focus wasn't particularly vintage or QRP (unless you count the 25 year old Heath SB-1400) but I did try out a new antenna (a MFJ-1777 102' center fed (with window line) doublet) and now I know more about setting up a special event station.
One advantage of a special event station is that there are no contest type rules. You can put as much into it as you wish. It could certainly be used to introduce other local hams to QRP operating or vintage equipment. A 1x1 call can even be reserved at http://www.1x1callsigns.org/ .
Fortunately WB4AEJ's posting at http://forums.qrz.com/showthread.php?444979-Planning-and-Operating-a-Special-Events-Station-2014 covers a lot of the how-tos.