Meals are in a booster. Other stuff, including sippies of milk or juice, is sitting down (sometimes booster... especially if it's messy, sometimes a big chair... he likes that!, sometimes on the floor). He has to sit while he eats, and if he has trouble doing that in a big chair or on the floor, he goes (gets put) into his booster. Water in a sippy is the only thing he can carry around. It sometimes seems as though he has trouble satisfying his thirst, & I don't want to impede that.