ok, just got off phone with Disney (90 minute wait). Spoke with a very nice and knowledgeable lady (Casey) and she stated Following in response to my questions. Also just realized my ticket was only for 5 days, not 6.
1) to Get a refund on the tickets Disney must have your original CC on file as purchasing card. Since mine was purchased through Costco Vacations this was not possible for me. You can’t give them another CC after the fact.
2) other option is to let tickets expire and there would be a credit amount In your account for the unused tickets Original price. If you buy tickets going forward from Disney via phone (not through website) or in person at the booth than the agent can apply the credit amount towards the new tickets at current price but new tickets only, nothing else. She also said this used to be only possible in person at the ticket booth but due to number of calls about this the agents are now allowed to apply the credit for phone ticket purchases, for now.
3) other option is call prior to expiration date and change the dates of your arrival( she said Disney is flexible with this now) to later date. Than if required call again in future and push the date even further back. It seems like you can do this indefinitely, for now. She said this has been popular as people can keep the tickets they have at the price they paid for the tickets in the past versus the current Price that goes up every year.
4). She said the last option is to get the full amount back as a non-expiring Disney Digital gift card that can be used at any Disney online or in person purchase, whether
Disney store, WDW or DL onsite, food and gifts, vacation packages,
DCL etc... this is the option I chose. I would have chosen option 3 but started thinking as my daughter is a little older that whenever we do get to Disney we may need more than 5 days. I forgot to ask if this gift card would be accepted if I book through TA or only if I go direct through Disney.
I will update when/if I get the gift card. Sorry for long post.