I write this a lot, but hey it applies to the conversation - when we stay at SSR I've called ahead a few times to Wolfgang Puck express and order to-go. In fact, I'm walking there while I'm calling, and by the time I get there the order is just finishing up and getting boxed. 2X for dinner and once for breakfast. Much better than the selection at Artist's Palette, and still just a counter service credit.
Also, in December of 2008, we were in SSR at the same time my sister was staying offsite with her family and our mom. My mom agreed to babysit my sister's kids and our baby in our room so the rest of us could have a double date adult's night out dot dot dot OR SO WE THOUGHT! We went to Raglan Road, we had ADRs, everything is going without a hitch, we've ordered drinks and our meals, and then I notice I have a message. Actually 3 of 'em. All from my mom with our baby SCREAMING BLOODY MURDER in the background. She jut could not would not be soothed by anybody but us. So my wife and sister skipped the restaurant, my brother in law & I stayed behind and explained the situation and the staff at Raglan Road was very courteous and understanding and crated all our meals to-go, and we ate in our Villa, ordering an extra meal for my mom, while sis' kids ate pizza and my baby finally calmed down in her mommy's arms.
Various places will do it. Honestly anchorman314's comment above is the first time I heard of a restaurant saying No, and it makes me wonder if the staff that day was new and not too hip on the "make the customer happy" ethos. I'm sure some of the higher end places might carp about it, but ultimately you're trying to give Disney some more of your money, a to-go order means profit earned without valuable seating space being taken up, leaving room for more customers.