Still one of the few "values" left at WDW.
When we stay at the All-Stars especially,with the 24/7 Beverage Island access.
With Disney charging over 4 Dollars for a 20 ounce bottle of Powerade Mountain Berry Blast,it doesn't take us long to get on the plus side of the Mug purchase.
We also like to get up early AM and drink several Mugs of Coffee and watch the Resort wake up.
Plus some Hot Chocolate or Tea on occasion,etc..
Just part of the Resort experience for us.