I was fortunate to be the chaperone for 4 United Nations Pilgrimage trips; 1989, 1991, 2001, and 2003.  In 2003 I created a website with photos, itinerary, information about our trip.  If you would like to look at it, this might give you some idea of what happens on a trip.  This link even has a link to information from the 2001 trip.  We were there 2 months before the 9/11 attacks.