We just came back from the Poly last week. We also bought a refillable mug. You can get it from Captain Cook's which does open 24 hours. The drinks are coke, diet coke, sprite, root beer, lemonade, water, coffee, tea, hot chocolate, etc. No juices though. It was our first time using the mug. We stayed at the Tokelau building. Although it was a bit walk to Captain Cook's from the building, especially after a day in the park, we loved it and will get it in our next trip to WDW.