I think you worked a miracle! I can't imagine accomplishing so much in one day, especially with more students than you had machines, and all those extra bodies (the moms!) crowding your space. I think you probably should have drawn the line at raiding your stash, though. In fact, I probably would have refused to do quilts because there simply wasn't enough time allotted, and the troop should have been asked to contribute all or at least most of the fabric, thread and batting. It seems that you have a lot of talent for teaching kids, and if you enjoyed it, maybe you should consider doing it again sometime, but on terms that are more fair and reasonable for you.
It seems odd they didn't love the FW. Probably one kid said something negative and set that attitude for the group. Maybe they thought it was a toy because of the small size. It would be interesting to observe whether that happens with a different group.