My DH has gone to one or two quilt shows with me, and I would not enjoy the grumbling that would result from him going through something like this. At very least they could have posted a large sign near the restrooms informing the fellas where to find one. I always see a fair number of guys at quilt shows. They're outnumbered, but we certainly don't want to discourage them from going.
Peckish's tale about the hand washing attempt made me LOL.