Besides convention food service, there was the problem of getting rid of human waste. All this talk about the (not so) joyfulness of assembling together, brought this long forgotten memory to mind.
It was, I think, a National or international assembly in Melbourne. VIC._ There had been problems in procuring a site, (for some forgotten reason) - so a decision was made to use a greenfield site, and build our own facilities.
Seating etc was easy, and so was the cafeteria, but what about the dunnies? And, here we see the JW genius for shit at work.
Instead of individual toilets, with all the attendant problems of changing full pans (which would fill fast at big assemblies), some genius came up with the idea of big pits, which could be screened with perimeter screening.
Then the most brilliant part of this pre-assembly planning. Instead of individual seats with holes for your bum, there would be long poles so you sit on the pole with your bum hole over the open pit, and have a brotherly chat with your your neighbour, about the wonders of the assembly program.
What a great idea, cheap, labour-saving etc. Gotta say, I made sure I went at home, before I left home, so I only used these pit toilets to pee.
The climax of this assembly experience, is that the inevitable happened. An elderly sister fell backwards into the open pit, and the sisters facility had to be shut down while some brothers were called in to wade through the divine shit and help her out.
If you think I'm making this up, I assure you it's god's truth.