I am on Harmony of the Seas now - other than at breakfast, we have had to ask for single serve cartons of milk and it has been brought to our table in Windjammer. Sometimes whole milk, sometimes low fat milk. Bars do not have it - we have asked. Only juice is available in dispensers in the am - lemonade, ice tea get added for the pm meals.
i did notice that the in room fridges are considered ‘coolers’ NOT refrigerators, as the power is killed when the master power switch is off in the room. We decided against keeping milk or yoghurt in them for snacks.