Hi Carol!
All of the Walt Disney World resorts and dining locations do an amazing job at accommodating guests special dietary needs.
Make sure that you note the food allergy on any Advanced Dining Reservation that you make for a table service meal by call 407-WDW-DINE.
You can also ask to speak with the chef when you arrive at the dining location to ensure that the chef is aware of the food allergy. Many Quick Service locations can also accommodate special dietary needs.
You can find a listing of those on the
Special Dietary Requests website.
As far as a moderate resort that I would recommend, I LOVE Coronado Springs. This resort has the Maya Grill, which is a Table Service restaraunt and Pepper Market Food Court. I love both of these restaraunt and they have a wide selection, so I'm sure there are plenty of options for your 6-year old.
You can send an email to special.diets@disneyworld.com if you have questions about your child's specific food allergy and to request a listing of restaraunt that can accommodate.
Have a magical visit!
Magically,
Stacy