Hello Elysia,
Thanks for stopping by planDisney with your question. It sounds like you might be in the middle of planning where to dine, looking through menus to find something your entire family will enjoy.
Walt Disney world is one of the easiest places to go if you have food allergies or dietary needs. While, not liking a menu item doesn't fall under either of those categories, Cast Members will do their best to make sure every guest enjoys his/her dining experience. If you or your child wants an item off of the kids menu, that is certainly allowed. You'll most likely be served a larger portion of the kids menu item that you order.
If you are nervous about finding foods that will appeal to your child, I recommend choosing restaurants that serve family style. That way you can sample a little bit of everything, and everyone is sure to find something that they'll love.
Ohana,
Liberty Tree Tavern,
Whispering Canyon Cafe, and
Garden Grill are some of my family's favorites.
Hope this helps. Have a magical vacation!
Diane