https://www.eventzilla.net/e/is-expedia-really-free-cancellations-2138665699

https://support.google.com/edu/classroom/thread/323619530?hl=en&sjid=12749118196322064008-NA

https://mysupport.partech.com/forums/general-discussion/575bb6ff-ede5-ef11-b542-7c1e52451124

https://mysupport.partech.com/forums/support-forum/457d2702-f5e5-ef11-b542-7c1e52451124

https://patch.com/california/unioncity/calendar/event/20250210/8b11c211-fd8c-4786-a03a-811fbfd26978/faq-what-are-fully-refundable-terms-on-expedia

https://www.steadyhealth.com/topics/faqs-what-is-the-24-hour-rule-for-klm-2

https://patch.com/california/unioncity/calendar/event/20250209/48db7d7d-6f73-47a7-aa8b-f58cb4232fc3/faq-fee-how-much-is-the-cancellation-fee-for-expedia

https://superuser.com/questions/1877366/what-does-non-refundable-mean-on-expedia

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https://pressbooks.pub/travellersguides/chapter/23-como-obtener-un-reembolso-en-expedia/