Ah the 1988 Divine Justice convention ,my memory is it was November too but I lived in Adelaide and had to travel to Melbourne Victoria for this with my wife and children where I was assigned to work in the "Security "department.
Perhaps Lang Park was on at the same time but don't recall. But what I do recall in Melbourne is it was pretty hot and alot of us were sitting on our own chairs on the sports oval as there were so many people there.
Some clown in the security department from Adelaide had a bright red station wagon prickled with antennae and cb radios with a large sign on it saying "SECURITY" and full of self importance!
And up till then I thought Jehovahs org was so smoothly operated till I sat in our car in the heat for 2 hours or so trying to get out of the carpark at the end of the convention days, what a disaster it all was.
It was one of those magic moments that helped me leave the delusion of the JWs behind years later.