Can we take drinks inside

Yes you can

You can bring a ice chest if you want

During normal Zoo hours*, the Zoo welcomes guests who wish to bring their own picnics into the Zoo with them, and there are picnic areas scattered throughout the premises available on a first-come, first-served basis. The Zoo requests that you do not bring aluminum cans, glassware or any other breakable materials and to refrain from using any small plastics items such as straws and cup lids that might accidentally find their way into an animal’s exhibit. Coolers and picnic baskets are welcome at the Zoo during normal hours, but the Zoo does not have storage lockers available for rent.

Yes and u can take ice chests with picnic lunches.

You can take drinks, food, and everything you need for a picnic, it's all fine.

Bottle water only, but inside a backpack yes they dont check

No

Yes

I took a sport pack with bottled water in it. No one asked anything about it or checked it. So I would say yes.

Yes we saw people walking around with ice chest