Can also be used at BB & TL!
http://www.orlandoparksnews.com/2018/10/refillable-mugs-purchased-at-select.html
To help maintain an excellent Guest experience for those impacted by resort refurbishments around the Walt Disney World Resort, resort refillable mugs purchased at Disney’s Animal Kingdom Lodge or Disney’s Coronado Springs Resort are now automatically activated for complimentary use at Disney's Typhoon Lagoon Water Park and Disney's Blizzard Beach Water Park.
http://www.orlandoparksnews.com/2018/10/refillable-mugs-purchased-at-select.html
To help maintain an excellent Guest experience for those impacted by resort refurbishments around the Walt Disney World Resort, resort refillable mugs purchased at Disney’s Animal Kingdom Lodge or Disney’s Coronado Springs Resort are now automatically activated for complimentary use at Disney's Typhoon Lagoon Water Park and Disney's Blizzard Beach Water Park.