I wish Disney would offer the extra days of credits up front, prior to arrival.
The dining plan can be added within 72 hours/3 days of arrival.
Any extra days of meal credits should be the same.
Otherwise the guests are paying quite a bit more by adding on days at the front desk.
I can see being able to add the credits at the front desk and it costing more if they have not planned ahead.
But if someone wanted to add any extra credits prior to arrival it cannot be done, that I am aware.
Of course the resort is probably buying the credits from WDTC. Since it does not seem to be WDTC offering the extra credits prior to arrival.
Definitely not something the resort want to make enticing, IMHO. They figure if some do it, they will at least make some $ from it.