Volunteers must be 21+ and must apply (at https://nationalzoo.si.edu/support/volunteer/special-event-night-living-zoo) and be accepted as a volunteer before signing up on the APO website. The shift is from 5:30 to 10:15pm. Dinners are provided on arrival. Volunteers are needed to help at the registration tables, act as greeters or bouncers, give out treats, bartend, and more. Roles are pre-assigned. The event is open to guests from 6:30 p.m. to 10 p.m. Volunteers should check in between 5:30 and 6 p.m. and are expected to stay through the conclusion of the event to help clean up their area. Volunteers should be comfortable with a hilly and possibly lengthy walk to their assigned station. Volunteers must be comfortable being outside for the duration of the event.