Question:
Where can we purchase tickets for the attractions? Is it possible to purchase in advance?

Answer:

Ticket purchase information for the following places is as follows:

California Academy of Sciences –
Purchase at the door or online. Tickets purchased online are valid for one year from date of purchase. https://www.calacademy.org/tickets/admission.php

Japanese Tea Garden –
Pay admission fee onsite

deYoung Museum –
Purchase at the door or online. Tickets purchased online are good anytime on day of visit unless it is a dated and timed ticket for special events. Note: Friday Nights at deYoung is a free event from 6pm to 8:45pm. https://tickets.famsf.org/public/

Conservatory of Flowers –
Pay admission fee onsite

San Francisco Botanical Garden (Strybing Arboretum) –
Admission fee (paid onsite) for non-San Francisco residents