Oh Dagney! Are you cute or what? Somewhere I have a picture of my mother and 6yo me at the same "Devine Will" International convention. It was the ONLY one held that year in the entire US.
My father was the Assistant Cafeteria Servant to Nickolas Kovalak at the Polo Grounds which held the slightly smaller group than Yankee Stadium. (over 250,000 total) No wonder I remember being terrified of becoming separated from my mother and smothered by the enormous crowds.
My parents and I had to arrive 2 weeks early so Dad and Kovalak could direct the set up preparations to feed hundreds of thousands of people! Dad had to arrive Each day before they served breakfast and stay very late into each night-8 days. He was in the cafeteria area the whole time, never sat with us and never heard a word of the program. So over a 6,000 mile drive and a 3 week stay to work 15+hrs a day for free.
He bought clip on backs for the bleachers and a couple of umbrellas but No cooler or water. And don't get me started about the line to the ladies room with the size of that crowd. I still remember almost wetting my pants.