Question regarding DDP and Mobile Ordering?

[Queen of the WDW Scene]

Say I go to Cosmic Ray's and want to add cheese sauce to my order while mobile ordering.
How does that work?
Is it going to use a snack credit for it?
Is there an option to pay OOP for just the cheese sauce portion of my order?
Would I place my order without the cheese sauce and then go back in and just order a cheese sauce and use my CC to pay for it?

 

[DisBuckMan]

It will use a snack credit for it if you include it in your regular order using the DDP.

Just do two separate mobile orders...one with all the stuff on the DDP, and the other with the OOP stuff. If it's only one cheese sause...well, that's what it is.