Hello Kara and thanks for visiting the Disney Parks Moms Panel with such an important question.
As the Mum of a child with Atopic Eczema I can totally relate to your query as I've often had to be careful about allergens which may cause a reaction whilst traveling away from the familiarity of home.
For Guest convenience you'll find
Laundry Services of
Self-Service Laundry Facilities and
Dry Cleaning and Valet Laundry Services at each Disney Resort.
I'm happy to share with you that for my own family I've used the great
pay-per-use Self-Service Laundries with ease and with
LaundryView.com (follow link contained
here) it's super simple to keep a 'remote eye' on laundry timings! I found in my own experience of using the Self Service Laundry facilities I could maintain control of both the washing detergents and temperatures ensuring continuity for my child's allergies and it might also be helpful to know it's possible to request a Resort room close-by to a laundry facility during
Online Check-in.
Additionally each Disney Theme Park benefits from it's own
Baby Care Centre which provides an oasis of cool and quiet in which to change, nurse or feed your darling little Mouseketeer! Plus I also thought you may find this previous
Moms Panel answer of mine concerning allergies to be a useful planning resource for your upcoming visit to Walt Disney World Resort.
~ Jane