There were a number of vendors at the ADZPCTKO this past year. We intend to return this year (LightHeart Gear) assuming we're invited, and although I can't speak for others, I suspect that a number of them will return also. Some had inventory to sell and some had limited supplies. This past year was our first year and we thought it was a great event! You can see a list of some of the vendors at the ADZPCTKO website. In addition, there was a local outfitter who carried a wide variety of things if you were not able to find the items you need from the other vendors who participated. They even made some runs back to their store to get models, sizes, or colors of certain things that they had not brought to the event. I got the sense that they were very accommodating. I would suggest that if there is something specific that you know you may want, contact the vendor ahead of time to make sure they save and bring at least one with them for you.