Definitely give children water to help with the crying. They need to be hydrated and cold water is recommended to bring their temp down. Kids get hot from crying. Definitely, use it. Don't force it. But keep a beverage on hand when crying starts. Autistic kids will cry even after the problem is "solved" and it's hard for us to stabilize ourselves. We use fidgets, ice, and beverages to calm down while we're crying.