Gareth, it's a BLAST. The convention is held at the Vacuum Museum, so no need to drag one's collection clear across the country. There is no 'fee' to go to the convention, and the motel expenses are low ($56 a night at the Greenstay Inn). We don't have banquets, and try to eat at good but inexpensive restaurants. I always have one barbeque (this year it's at the pavilion at the Tacony factory), which is at no cost to my friends. There are no cliques, no hook ups, and no one feels left out of the fun. No alcohol during the convention hours, so no hurt feelings (and no apologies the next day). What someone drinks after hours is their own choice.
There's a tremendous amount of sharing. I 'hoard' bags, belts, vac, and repair parts all year long, just to share them with my fellow collectors. Right now, I have a box with over 200 packs of obsolete bags to share, some of them more than forty years old. I save hoses, and brush rollers from machines that are duplicates before getting rid of the machine.
And we have door prizes, like the Maytag M1200 that will be raffled off this year. There is no 'set in stone' agenda, just fellow vacuum collectors, learning about vacuums, and enjoying each others company and fellowship. It is NOT fancy, and certainly NOT 'high society drama queens' trying to out do each other.