Hi Gabrielle! Answering this question is not exactly a black and white answer so I can understand why you are finding different opinions.
When children 3-9 are on a
Disney Dining Quick Service Meal Plan during the vacation they are expected to order from the children's menu when available. Many quick service locations don't have specific children's menus and thus you would just order whatever is offered.
As far as menu options go there are so many different Quick Service locations that you can easily find items that are beyond the typical burger, fries, chicken fingers that kids seem to gravitate to. Disney has been working hard to offer healthy options at all locations when possible. Your best bet to know which location you would like to dine at is to check the menus of all the
Quick Service locations in the parks and resorts. You can check out the offerings on line and then make a plan. If you wait until you arrive you will be spending too much time going from one location to another checking to see what the menu lists.
There are so many great places for dining in Walt Disney World that I am sure you will find many new favorites among them!