my DS 1 is allergic to lactose and soy so not even silk will work, but Disney told us to call the dietary line and tell them his allergies and they will stock lactaid in our hotel food area for that week, nov 3rd - 13th. They probably won't have it in the park but in the food court they will have it there so i can buy it and make his bottles before we go to the park.
if that doesn't work and we have been told the wrong thing then we will do the gardengrocer.com because that is the only other choice.