I used to despise the ticket system. I always saw it as a way to get the convetion goers to spend more money on food than they otherwise would have if they had been paying cash. Those tickets were like play money, and everyone was "encouraged" to buy them through the local congregation (I think to see where the money was). Once you bought them, if you didn't use them you could not get a refund. If people bought too many tickets, they were stuck with them and could not use them at next year's convention, because they were a different color every year.
I had long since DAed before the "donation" system went into effect, either for the food or the literature. But I did used to volunteer at the food stands at the Cow Palace (check out all the cute guys-look for "repeat cusotmers"). Until they took me off the "front counter." There were a couple of reasons, but the leading force in being relegated to a gopher had to do with my ability to add up the totals as the items were being requested. It was all about patterns-the folks would tend to state their requests in a similar order, and usually in similar pairings (if someone requested 3 "entrees", I could instantly add 9 tickets for three sodas, before they were ordered). Those totals were on easy recall for me. I was faster than the MSs and Elders that would flank me. From time to time, I could also spit out totals for their "customers" too. These "grown men" could not handle that some snotty female child could do her sums faster whilst also doing theirs, so I eventually was disallowed from using my God-given talent of recognizing patterns, and taken off the counter. I rarely stood up for myself, this was not one of those rare times that I did.
This was before I left. This had nothing to do with my leaving, but this had a lot to do with my becoming a math teacher.