Since you booked in a package and you’re within 30 days of your travel, you can’t make any changes or cancelations without incurring a fee. It still may be worth it to make the change, but decoupling your hotel from tickets may require a call. They may make you just buy tickets separately, but hopefully keep your APRs.
Here is the verbiage from the website link I posted above:
Cancellation and Refunds
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For cancellations made 30 days or more prior to guest arrival , amounts paid, minus cancellation fees assessed by third party hotels or other suppliers, non-refundable runDisney race registrations, non-refundable travel protection plan costs, and other amounts owed, will be refunded.
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For cancellations made 2 days to 29 days prior to guest arrival , amounts paid, minus a cancellation fee of $200.00 per package and minus any cancellation fees assessed by third party hotels or other suppliers, non-refundable runDisney race registrations, non-refundable travel protection plan costs and other amounts owed, will be refunded.
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For cancellations made 1 day or less prior to guest arrival or for no-shows , the full price of the package is non-refundable.
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Changes to Reservation – Changes to reservation, including but not limited to change in travel dates, length of stay, party size or hotel accommodations, are subject to availability and the prices applicable at the time the change is requested and guest is responsible for paying any increase in price resulting from the change. In addition, changes made 30 days or less prior to guest arrival are also subject to a change fee of $50 per package plus any change fees assessed by third party hotels or other suppliers.