Hi Lucinda,
My family just love using the
Disney Dining Plan as it is a super convenient and affordable way to enjoy snacks and meals throughout Walt Disney World.
The Disney Dining Plan includes one (1) Quick-Service Meal, one (1) Snack, and one (1) Table-Service Meal per person, per night of your package stay for everyone in the party ages 3 and over. The plan also
includes one (1) Resort refillable drink mug per person, that is valid for the length of your stay (eligible for refills at Quick-Service locations only in your Disney Resort hotel).
You can redeem more than one Quick-Service meal, Table-Service meal or Snack per day, if you wish, until your total is depleted and all unused meals and snacks and the ability to use your Resort
refillable mug expire at midnight on your package reservation checkout date.
So, to answer your question, you can continue using and snacks and/or meals which you have remaining up until midnight on your 7th day.
Wishing you a magical trip filled with memories which will last a lifetime!