Quoted from WaddleJrJr:In the 3 years I've gone to the Ohio show I haven't been at one that's had a juniors tournament, so it's been gone at least longer than that.
Michigan having one must be a somewhat rare exception, because any other shows I think of off the top of my head (Cleveland show, ReplayFX, California Extreme, Texas Pinball Festival, Arcade Expo) don't have it either.
I wouldn't be opposed to having a junior's tournament, I'm just not sure what way it could be scheduled to actually function well. If anyone knows how it use to be done let me know, and I can bring it up in the tournament planning discussions.
My kids were in one at the Michigan show that had a ton of kids signed up and went really fast (I think it was Marcos who brought a bunch of Metallica's and Mustang pins), they got to play one game on Mustang, and who ever had the highest scores won. I believe there were a couple different age groups.