2017 quick service dining - no substitutions?

Hi. Smartmomsplandisney.com is reporting that substitutions are no longer allowed when using the 2017 Quick Service dining plan. The example given was swapping the beverage for a snack or a side. Can anybody confirm or deny this change? Thanks.

I found that it depended on the location (traveled 3/31 -2./2). For example, the dining hall at POP was super flexible and let us get a dessert instead of a beverage. I found this best bet was to ask at each location what your options were.