Sunday's not going to work for me. I'll be at the races. Unfortunately I won't be OC'ing there. Going over LVMS's web sight doing a little research I found what I was looking for.
Smoking (Prohibited in grandstand seating areas only)
Coolers (Including food or beverage with the exception of bottled water)
Stadium seats wider than 18 inches
Fires, Grills, Fireworks
Weapons Of Any Description
Pets (except service animals assisting those with disabilities)
Noise Makers, Horns, Helium Balloons, Beach Balls
Others items in the judgment of speedway management or security staff which pose a safety hazard or diminish the enjoyment of the event by other patrons
The way I see it, that just means visable.
After all concealed means concealed.