I was in WDW in April on a little solo trip. It was a glorious day, and I did not want to be inside. I went to Le Cellier, and asked the wonderful servers if it would be possible to get a bowl of cheese soup to go. No problem. I got a styrofoam lidded container, soup spoon, salt, pepper, and a pretzel breadstick to go.
I took my lunch over to the Off Kilter stage, enjoyed my soup, and caught the show!!!
Go for it!