Yes mask are required at all time unless eating & drinking
Yes, but as someone said earlier you need to make a reservation ahead of time. Also it's been crowded in Fri-Sun.
Yes they are open but you need to make reservations for the day before you go. You can prepurchase your ticket online as well. Below is there link. Copy and paste it to your internet browser to reserve. https://zoo.sandiegozoo.org/reservations
Yes
Yes, but have to reserve the day.
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