I have taken food out in every CS in Epcot and they all had someway of giving it to you in styrofoam boxes or in a bag.
I know we took sandwiches from DHS Backlot Express too.
I'm sure we've done others in the parks, but I just can't recall at the moment.
In the resorts, I'm sure we've taken food out from All Stars food courts, Roaring Forks, CS at OKW, Boardwalk Bakery, ESPN, and probably more.