Do Not Touch” signs in art exhibitions. Of the 15 responding museums that offered limited free admission days or hours, more than half reported a significant difference in visitor demographics: seniors, large family groups, school groups, disabled persons and drug or alcohol recovery groups were most likely to attend at these times. Museums in Seattle, Scottsdale, San Diego and the San Francisco Bay area all reported an increase in student visitors on free admission days. Sue Cake, a longtime docent at the Oakland Museum of California, observed that free admission days enabled teachers to assign a museum visit as part of a class lesson, likely a factor for increased student visitation at many museums.