Don't believe u can take in any food or drinks but like said earlier u can go in and out as needed!! :)
Outside food and drink are not permitted in the zoo but there's a shaded, lit pavillion for picnics by the parking lot
You can bring a cooler and leave it in the car. You can go back to the car as often as you want and reenter the park at no charge, they will stamp your hand when you leave so you can get back in.
I carried a insulated cup, didn't see any full size coolers. Hope this helps
Thanks! Your answer is awaiting moderation.