Hello Hayden,
How completely marvelous to be staying at Walt Disney World Resort for a whole 26 magical nights, I'm really quite envious you know!!
My family are huge fans of the
Disney Dining Plan so I can tell you that you're definitely going to enjoy many delicious, great value for money meals during your 21 nights on the Disney Dining Plan.
You are quite correct a Rapid Fill Resort refillable drink mug is part of your Disney Dining Plan; generally speaking these mugs are good for length of stay; which for you is 21 nights.
However, it is possible to purchase a Rapid Fill Resort refillable drink mug at your Resort for the remaining 5 nights of your holiday.
If I can help you further plan your upcoming Walt Disney World Resort holiday please come back and ask me another question.
Have a great Disney day.
- Jane