You may try a class or activity once without being a members of the SSAC (Note: you must still pay the drop-in fee). Memberships may be purchased at the front desk during office hours from 11am to 2pm, Monday to Friday (except holidays). Memberships cost $30 per calendar year.
Having visitors for a week or two? Members may purchase a strip of 5 Guest Tickets for $25 during office hours. These can be used by guests to cover a $3 activity without having to purchase a membership. Simply put the Guest Ticket in the activity fee bag in lieu of $3.