Never anymore. I used to love it too, but it's hard to be away from the family for anything more than I already do.
But, in the 80s, all the food programs would get together and hold a day long workshop with classes, and trainings, and people would set up tables out in the lobby to sell their teaching supplies and books. It was fun! But, they stopped doing that about 15 years ago, and now you have to take one class here, or there, but not all in one place in one day.
I remember taking one class, where the teacher said "You should buy a video camera, tape the kids being bad, and then make them rewatch it so they can learn from their mistakes".
That was back when video cameras were $600. Weirdo.