Can i bring snacks and water for my daughter ?

Yes

I brought some for my son. They also had a water bottle refill station outside.

Yes they check bags but didn't not stop us.

Yes, I usually bring in a water bottle and can fill it in the cafe.

No food or drinks allowed in the building

Thank you so much guys.

Yes. There are "filling stations" inside.

Yes you can bring snacks. The person in front of me brought some sort of basket with sandwiches and it got through fine as well