I have read other threads on this and understand that if you take any fluids you're going to have to drink them when you go through airport security.
My plan is to take a couple of empty bottles, 2 x sachets of milk powder and ask the stewardesses for water once on the plane to make up milk as dd2 (11 months) just has milk mid afternoon and at bedtime - can anyone see any flaws in this? Are they not allowed to give you hot water on the plane?