When we were at WDW they only had the scanner at Blizzard Beach. The mug was $10. I was told you could bring back your old mug and buy a new sticker for it for $5 You used the barcode scanner yourself at the dispenser the was away from the resturant. They had 3 different areas in the park where you could refill them yourself, so you did not need to stand in line or have a cast member do it for you