Here is a link to the policy as of 5/3/22 https://www.royalcaribbean.com/content/dam/royal/resources/pdf/covid-19-cancellations-and-refunds-policy.pdf
At the bottom it says this: *By default, you will be issued a Future Cruise Credit (FCC) for the amount specified, unless and until you request a refund in lieu of a FCC. All refund requests must be made within six (6) months of the date your booking is cancelled or the scheduled embarkation date, whichever is earlier, or you will only be entitled to a FCC for the amount specified.