I taught the participants on my larger loom, as it was easier to see from where they were sitting, and it meant I had more stitches that I could show them before I had to start wrapping a new row. It worked out well, and I finished the project I had on that loom.
Overall, it was a very successful day. The food bank got a HUGE donation, the minor hockey league that this was for also got a ton of money. I can't wait to see what else these organizers come up with.