Greetings Christoher,
Thanks for stopping by the Disney Parks Moms Panel! It sounds like you will have your hands full on your upcoming vacation, I hope I can make things a bit easier for you.
I did some resEARch, and you will be glad to know that distilled water is available at
Walt Disney World Resort. Most of the Resort hotels and
gift shops carry distilled water, but you may need to ask a Cast Member for help to purchase enough for baby bottles. If they do not have a gallon immediately available, they will be able to get it for you the next day. My fellow panelist Brandy recently answered a similar question regarding distilled water for a CPAP machine. You might find
her answer useful as well.
If you have a car with you or can use a ride service, there are several large stores on the periphery of Walt Disney World that also carry distilled water. If you prefer not to leave the property, several services will deliver directly to your Resort hotel. I have used both Garden Grocer and Amazon Prime, and the grocery delivery made our stay infinitely better. A friend routinely uses InstaCart, and swears by it for every Disney trip!
I would also suggest stopping by the
Baby Care Centers located in each of the four Theme Parks. They have water that is safe to use with formula as well as a variety of other baby essentials. One of the best things is they are a comfortable, relaxing place to feed and change the kiddo.
I hope this helps, and please feel free to come back if you have any other questions.
Have a magical vacation! Rayna