^^ to be honest, they do actually have milk there they coud give you. They just tell you they dont so you pack it. If youre planning on breast feeding there really is no need. But if youre bottle feeding then best to pack everything you'll need including the milk.
There are lots of different situations where the mother cant be around to feed the baby or isnt well enough, so of course they have milk there. Also there are mothers who give birth unexpectedly and havent got a bag of ANYTHING. And they wouldnt not feed a baby. I can see their point, it must cost them a bomb if we all expected them to provide our babies milk. But Im not packing any cos I am planning on breastfeeding, so if a worst case scenario arrises, then I will expect them to be able to offer a first feed while OH gets some from tesco.