I give water at snacks. Due to bowel problems for two of my children they "have" to drink as much water as possible. I have them drink app. 4 ounces in the morn. Milk for lunch. For the bowel problem children - 4 ounes of milk. Others can have up to 8 ounces. I feel 8 ounces is a lot but they "have" to eat everything in order to get more than 4 ounces of milk. 4 ounces of water for aft. snack. They can always have more water and some do. I have a water machine so the older ones are learning how to use it. No juice, and I tell all my parents I serve no juice.