That is a tough one. If they are not receptive to begin with then confronting them yourself may just cause an escalated situation. Get the reps involved and take yourself out of it as much as possible.
On a side note: its hard to believe that there is not a meat, sanitization, and fire extinguisher inspection at the beginning of the event.
Movin' The Chains BBQ TEAM
Custom Yoder Frontiersman II and YS1500
Reverse FEC 100 & Right Handed FEC 100
Desert Thermapen W/ American flag
KCBS & PNWBA CBJ