Hmmmm. Luke's "arbitrary" definition of 6 hrs or more includes a lot of events around the Mid-Atlantic that nobody really thinks of as festivals. For example, there's the afternoon advanced contra preceding a regular community contra dance. I recently organized and called for one such event here in Virginia, called Contraphoria. Also, I'm scheduled to call techno contras at two dance weekends this fall, each session 1-2 hours in length, but not as a featured caller. One is a Saturday afternoon "workshop," and the other is a Saturday late-night contra party right after the main contra dance ends. In November at Glen Echo I will be calling the final, late night session of the 12-hour Black Friday Bash. This probably qualifies by your criteria. But up to that point, I will not consider myself as having been a festival caller. I guess I am a "yes," albeit somewhat futuristically. Brian Hamshar Charlottesville, VA