Hi Heather!
Welcome to planDisney.
It's always a pleasure to assist my fellow guests from the UK, and this is a good question! The Refillable Resort Mugs are a great addition to the
Disney dining plans (and I always purchase one at the start of my visit if I don't have a dining plan, as by day 3 of my holiday the cost is covered by the amount of coffee I consume!).
You'll be pleased to know that these mugs can be refilled at the beverage stations at
any Disney Resort hotel, usually located at the Quick Service Restaurants. They can be used for unlimited refills of select fountain drinks, including sugar-free versions, and hot drinks such as tea, coffee, and hot chocolate. You will find a sink next to all the beverage stations to rinse your mug before your next refill.
There are currently no refill stations for these mugs at the Walt Disney World Resort theme parks, but you can take your refillable mugs with you as they are easily transportable with lids that clip shut, and have handles so you could use a carabiner clip to attach them to a bag. They can be refilled at the water fountains or ask for a cup of free iced water at any Quick-Service location at the theme parks.
At the
water parks ~ Disney's Typhoon Lagoon and Disney's Blizzard Beach ~ the purchase of their own mug is offered for unlimited refills of soda for use during a day at the water park.
Please come back and visit us if you have any further questions, and you can
send a question directly to me if you wish. We will be happy to help you plan your magical holiday at Walt Disney World Resort.
Sue