This is only our second annual meet. Last year, we had one uninvited vendor there, thus the proactive step we took in adding in a little notice for them. We don't mind vendor involvement but they need to work out an arrangement with us in advance.
Here's an unsolicited opinion - it would be great if we could get some of the vendors there. I specifically made purchases based on what I saw at the last meet. (Cloudrider grill and Elemmat.) It would have been so much better to have the vendors right there to sell me the items. Adding-on your new accessories would be a fun way to spend some time with our fellow EOC'ers.