The park hours changed today to show the parks closed through 5/2, which was the first day of our trip, so I cancelled our May package for the Swan (booked through Costco Travel) and re-booked for December. For anyone who cares to read it, here's my re-booking experience.
As a backup plan just in case Costco wouldn't refund the park tickets, I had previously booked a room-only reservation directly with Marriott. I still planned to contact Costco once our dates were officially closed however, because, if I was able to get refunded for the park tickets, the room savings of booking a new Costco package vs the direct Marriott rate still resulted in a net savings of $1000, even though the park tickets in a new package would be more expensive.
So I gave Costco Travel a call. Despite a recorded message saying that there were higher than normal wait times, I was immediately connected to an agent. She said that the park tickets and hotel reservation were fully refundable, but that United's cancellation policies were for credit only, and that the credit would have to be used within 12 months of the date the tickets were originally issued (which would be August) unless United cancelled the flight altogether. I decided not to cancel my package at that time, so that I could look into what to do about the airline tickets.
I went to the United website and found that they had extended their refund policies through May 31, and increased the credit usage period to 24 months. Wanting to make sure that I got properly refunded (with the extended usage dates), I decided to contact United directly and cancel the flights. There was a bit of a hiccup with the refund, since I had booked through a 3rd party, however after a few minutes on hold, there were able to issue a credit certificate directly to me (to arrive via e-mail within 3-5 business days), and said it was usable for 12 months from today to book travel up to 24 months from today.
With the airline refund squared away, I called Costco back - again, no wait. I told the second agent I wanted to cancel the package, and he told me that United would charge a $500 fee for changing the flight (which I knew wasn't correct). I told him I'd already been issued a refund directly from United, and I just wanted to go ahead and cancel the rest of the package. He then insisted on checking the United cancellation policies again, despite what I'd told him, and after a couple of frustrating minutes on hold, he came back and repeated that my flights weren't within the cancellation waiver period (still not correct). When I reiterated that I'd already gotten a refund from United, he said "I heard you the first time." Finally, he processed the cancellation, and refunded me for the amount of the park tickets and the hotel.
I then booked a new package (without airline tickets) for the December dates through the Costco website.
Finally, I called Disney to get a refund for our Villains After Hours tickets, DiveQuest reservations, and Royal Tea Tour reservations since those dates have not been officially cancelled yet. The Disney CM said that they would all be automatically refunded to the same gift card I used, if I still had it. When I mentioned that they weren't cancelled yet, he said, "It's going to happen." Since we'd added funds for our food budget to the card I'd used, I asked if I needed to transfer funds off of the card to clear space for the refund due to the $1000 per gift card limit. He said that it wouldn't be an issue.
So that's my re-booking saga. Probably more detail than anyone wanted to read, but I thought i'd be thorough just in case it helps answer any questions someone might have had.