Hmm, that’s a good, practical follow-up question, @melaniethomsen.
The Convention is particular who it lets in, especially if they are carrying a camera or look to be “press”. They only allowed in folks who had registered properly and had their name badges. This is mainly to keep people who hadn’t paid from coming into a paid-only location, but I think it was also to protect the attendees and block complete strangers off the street from just wandering in. The Convention was not wholly “public”. And as such, much more safe.
However, it was “public” to all those who were attending (and who were vendors). Everyone in attendance had the freedom to take pictures, and everyone in attendance had been notified that there would be pictures taken at the event, so this means that if there was anyone who would not want their picture taken would either not attend the event or need to take on the responsibility of notifying the leadership that they did not want their picture taken during the event. As part of the “leadership” in photography, I can tell you that there have been few (if any) requests of this nature.
The Convention doesn’t like outside press to come in unless they have been invited or have been checked out to make sure what they will take pictures of or report on will be in good standing with what the Convention stands for. That’s how I come in, along with all the other photographers. We are a “Convention approved” group. You are a “Convention approved” vendor. Therefore, I do not think it would be a problem to use your photos from the Convention for editorial purposes.
If you were not a vendor or attendee, the Convention would be “private” to you. But since you are part of the group, it is “public” to you and thus free to use the pictures you took for editorial purposes.
This is my opinion. Please, I’d love to hear what others have to say on this issue who have more experience or education than I!