What can I bring into the park? (Umbrella, water, food, backpack?) Or where can I find out the latest information? Thanks!

bring water and you can also refill your bottles throughout the park (their water fountains have bottle fillers)

Specific, we brought umbrella, water, baby food, backpack and a stroller,

Food water and your backpack

For now,We are allowed to bring food and water. They do have metal detectors and check your bags.