is it possible to upgrade a 5 day pass bought from Company D?

[goofille]

My daughter is working in DisneyWorld this summer and can purchase discounted 5 day passes. We really would have wanted 6 day passes. Is it possible to buy the 5 day passes, then upgrade them later at Guest Relations at the parks (or even at the resort)?
Thank you

 

[jmclaugh]

I don't know the official answer, you'll need to talk to Company D about that. But I work concierge so this what I know from selling tickets

Typically the only want to get a discount is to buy the tickets through Company D/AAA/whoever is giving the discount. If you try to upgrade at the parks, you'll probably be able to, but you'll be paying the regular admission price and will probably have to pay the difference, ie. no more discount