Here are some things that I can think of - that we would probably need assistance on for the weekend:
Getting a block of rooms from a local hotel (special discounted rate)
Coming up with an event "logo"
Dash Plaque (designing, ordering, etc....)
Tshirts or Polo Shirts for the event
Putting together an itinerary (dinner plans, possible Plant Tours, guest
speakers for "inside" info about the birth of the XLR, etc....)
Trasportation between hotel and museum (for those that are leaving their
XLR's in the museum during the event)
campaign to get people to attend (advertising or something I guess)
... just to name a few things off the top of my head... anything else you can think of Bruce? Feel free to edit them in.