If I can swing it around the work schedule, I'm gonna try and make the track day, at the very least. If I do, I'll bring my easy-up canopy, as well. The infield @ NJMP doesn't have much cover from the sun. Aug. in South Jersey can be a scorcher...I'm not even going to mention the "r" word. Bringing a folding chair is an excellent idea.
Also, you guys in the caravan should bring basic tools and things like duct tape, wire and anything else you can think of to do roadside rapairs. The biggest thing I would suggest is to shake your car down PRIOR to the roadtrip. Try to have any mods/repairs done to your car 2 weeks prior to the event and take the car on a 50 miler or so, beforehand. Stuff like loose clamps, electrical gremlins can then be fixed and you won't be holding up the group. Just a suggestion.
PS. I'm starting to get Convention fever.....