I will just add that it would be appropriate for the chair to make a comment at the beginning of the session, so that our guests know that a meal will be served. So it may well be that members will get up. But they will not be leaving to get something to eat, with the committee sitting until 1:00 p.m. I tried this with three other committees. It works very well.
On March 9th, 2010. See this statement in context.