Regarding valuables, I saw some jewelry and watches (Franck Muller?) there. Many of the unfunded coins are relatively inexpensive. I think mostly the funded coins of say over 0.05BTC would be concerning. I earlier considered putting anything of higher value in a different VIP area only shown to high net worth individuals. Or they could be not there at all. Or perhaps anything that could be funded only has the peeled / unfunded out.
I've been to some bitcoin shows with jewelry, large gems / large raw solid gold pieces, etc.
I also would be concerned about leaving things over night. I would take my own high value things home with me each night.
During the day, I certainly would use locking jewelry cases for everything.
many people did take things home or put them away - We ran the printers over night and no one messed with them - the submersion folks across from us left their S19J's out - though those would kind of be a heavy thing to run off with lol