First, direct your questions to them. Every "open" chili contest I've seen is different,
one way or another. However, I've never seen them heat it up after turn-in, so I'd
assume that you'll be putting it in some type of styrofoam cup, HOT. They may have
a crowd hand-out, may not. Some do a crowd favorite vote... Again, ask. Also, is
it sanctioned, or just "open". If sanctioned, it's likely to be CASI. You'll want to
read up on their definition of chili. Seriously, they define it fairly strictly as Texas Red,
meaning no beans or other filler or chunks of vegetables; pretty much meat & gravy.
If open, anything goes... If CASI you'll have to make it from scratch on-site, not
even a store bought mix of seasonings can be used. Again, if open, you'll want to
ask. Some allow pre-made chili, others require on-site.
Break a leg!!