We got ballons once when checking in our son and his family at the All Stars. They had had a horrible, terrible flight down to Orlando. A cnacelled flight that forced them to have my daughter-in-law's mother drive them three hours one way to Cincinnati to puck up their schedule connecting flight. Then that flight was delayed and then the connecting flight to Orlando was delayed. Plus, my daughter-in-law is terrified of flying and was only doing it to save a fifteen hour drive.
Anyway, when the kids finally got there, I was checking them into the All Star and told some of this to the Cast Member. She went over to the balloons and gave my granddaughter a bunch and said they were for everyone putting up with all the delays getting to Disney World. Not expected but it sure perked everyone up after a very frustrating day.
So the ballons may still be there but giving them away to everyone isn't a normal thing.