Agh it ate my msg
okay short form, BoG is easy to eat GF, even QS. The computer will have GF options readily available. We had the turkey Sandwich. Kids size is the same as adult size, just to warn you. Cream puff for dessert.
FTBBQ house in AK has good selection and service, speed of food delivery. Sunshine Terrace in EP is really easy with something at every station. No idea about HS.
Most TS will easily accommodate GF, pizza is an exception, unless GF is listed inn the menu, assume it's frozen. Pasta is fine.
What you get, depends on which chef. Some chefs get shuffled from one pace to another, and always seem less than helpful. Others bend over backwards to get you a magnificent meal.
If in doubt about the availability of specific GF offerings at TS, contact the restaurant directly. The numbers can often be found during the reservation process in the terms and conditions scroll down.
Do not despair, you can still have Mickey waffles.

special diets will give you a runn down on what snacks are safe, but don't typically give too much info about the individual restaurant offerings.
At Tusker House, request their GF naan bread

we seriously only eat that some times it's soooo good (okay we've been GF for a number of years, recent GF converts may have different definitions of good, just be forewarned).
There are dedicated GF friers for fries and chicken fingers pretty much everywhere - if you want junk food, fast food - you can get it. If you want gormet - you can have that too.
You want a special order cake? They taste good, and look gorgeous. I won't say they taste awesome, b/c we order chocolate, and nothing beats my chocolate cake recipe

But they look a ton better than anything I could make or buy around here.
Other desserts: cream puff, creme brule, lava cake, fruit, ice cream, dun don's delight, pre-packaged cookies or brownies