Busan's official booking portal lists the family activity 'Spider, Architect of the Forest — Fill Up in the Woods' at Haeundae Arboretum on Saturday 31 October 2026. Its stated online application window is 12 October at 9 a.m. through 25 October at 5 p.m. However, the current listing says 'registration closed'; do not assume booking is still possible simply because the published deadline has not passed.
The programme description says morning activities are for families with children aged six or seven, while afternoon activities are for families with primary-school children. Exact session times and participation fees are indicated at the session-selection stage, so neither free participation nor a start time is assumed here.
The portal recommends creating a Busan City account and signing in before applying. Nonmembers may have trouble viewing or cancelling bookings, and incorrect contact information can lead to cancellation. The page shows five days in the cancellation-period field but three days in the detailed instructions. Confirm the applicable deadline with the operator. Call 051-888-7146 to check the current application state.