b) The following categories of individuals are exempt from the $5 entrance fee:

1. 1) Children age 18 and under;
2. 2) Individuals age 65 and over; and
3. 3) Active duty members and veterans of the United States Armed Services.

c) The Illinois State Museum may, at its discretion, waive or reduce the entrance fee:

1. 1) for persons attending or volunteering at special events held at the museum;

   1. 2) for members of the Illinois State Museum Society and members of the public entering the Museum for Museum Board business; and
   2. 3) when the Illinois State Museum determines the benefit of reduced or waived admission for a specific event or for a specific time period outweighs the potential loss in revenue.