What a good idea! Yes thank you!When I was there in October, I saw almond milk in the refrigerator section of the quick service places at Swan and Dolphin. I think the hotels with a DVC section sell almond milk in their gift shops.
Where are you staying? You might want to post in the thread for your hotel, and ask people to check in the gift shop for you.
I would try this at home before you get to WDW. does have a different taste and some kids do not like the tasteMy experience was that they had soy milk not almond milk. You may want to bring shelf stable boxes if you have a child who drinks almond milk. They sell six packs of small sized Silk Vanilla Almond Milk that is shelf stable. You could try ordering from Whole Foods if your local store doesn’t carry it.