This Saturday, 25,000 people are expected to flood Wayne State University and the Detroit Institute of Arts for the 32nd annual holiday event: Noel Night. \"Some people who have been working here 10 or 20 years don\'t know we exist,\" says Mark Cassell, research associate at Wayne State University\'s Museum of Anthropology. A tent outside Old Main will provide hot chocolate and carolers. There will be choral and dance performances, a student art exhibit, a planetarium demonstration, plus an exhibit of contemporary Cuban art at the adjoining Elaine L. Jacobs Gallery.