I remember one convention in the 80's at Belmont Racetrack in New York where there was so much donation money coming in that we actually ran out of table space and literally had to dump huge piles of cash on the floor. It took several hours just to get the creases out, face them up and sort the bills before we even started the first round of counting. There was probably more cash moving at this convention than the MGM (Las Vegas) during the Pacquiao / Mayweather fight..
But I have a feeling those WT glory days are long gone.