Disney says
Served with Sweet Potato Fries, Fruit and choice of Small Lowfat Milk or Small Dasani® Water.
Friendliest.app says
The kid's cheeseburger is free of fish, shellfish, peanuts and tree nuts.

This meal contains gluten/wheat, milk, eggs and soy. It can be made milk-friendly if ordered without cheese and with the small Dasani water instead of milk.