At the recent 2010 South Chungcheong Province International Tourism Conference in Yesan, based on the number of people at lunch on the last day in the second photo below, I'd say there were 500+ people… But take a look at the number of people attending the academic presentation in the bottom photo! Appears that a lot of people only showed up for the food and spent the rest of their time in the spa.
But probably the most surreal moment of the conference was the top photo taken on the evening of the first day when it turned out that after-dinner entertainment was a team of Korean belly dancers! I couldn't make out the connection between that and tourism in South Chungcheong Province.