Not a meat answer, but make a complete list of what you take, then mark it off the list if it was not used, except things like fire-extinguisher of course. This will make packing and unpacking much easier the next time and do it for a couple more, its amazing what you take you wont need. Most comps are close to some kind of store and people will lend things if you need it, but forgot it. Good luck. On the meat I always took the sticker that came with the meat and enclosed it with the meat so they could see what it was, especially the weight if need be.
Dave