Find out first what security measures they are taking. When my guild has a show, we have a few members "sleep over" in sleeping bags on the floor every night so the quilts are continuously guarded from the minute they are hung until the last one leaves the building. There is a receipt system in place for drop-off and pick-up of each quilt. I entered a quilt in another local guild's show and called first to question security. I found the room (in a church) is locked each day at the end of the show, so I was happy with that and trusted them with my quilt. All was well. You are wise to question security, though, because quilt thefts are on the rise. I like the suggestion to be there when the quilts are hung and taken down, because that's the most risky time.