It is a BBQ cookoff. It is held at the fire museum in King's Mtn. Not sure what other activities they have planned. They usually have a band on Sat.
Friday afternoon/evening is a good time to meet and visit teams. Lots of other cooking going on then for supper, etc. Anything Butt contest is on Friday night.
Here's the link for more info.
King's Mtn BBQ Cookoff