I can't inform you as to whether the people at the tables--the volunteers--do have access to the date of birth. If they do, that would probably be covered, I would think, by an oath of office that they would have to take to keep that information confidential.
To the best of my knowledge, this hasn't been an issue. I haven't heard that this has been an issue, but as you know, it is sensitive information. Your date of birth gives access to many things in our system, notably all our credit records. You can do virtually anything with your date of birth.
So if it were to be included in a list, I think it should be used as circumspectly as possible, as little as possible, and shared with the smallest number of people possible.