Couple thoughts for you (note, I've never organized anything bigger than a family "secret Santa," and that went... Poorly...) on this:
* Try getting in touch with a group that does BBQ contests elsewhere to see if they can give some suggestions. Let them know this is a charity thing up front.
* You can probably get "scented" mailers, rather than "scratch-n-sniff," after all, perfume companies do this sort of thing...
That's why we're partnering with the KCBS. They're probably the largest BBQ association (or that's what I have understood).
Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?
How to post data/code on a forum to get the best help: Option 1 / Option 2