Placeholder benefits expire if not used within 24 month deadline. There are never any exceptions to this rule... Except now. If you move a cruise (not cancel, but move it) and end up losing your placeholder benefits (because the new date was past the deadline), you *might* get them reinstated IF Disney ends up canceling the cruise you’d rescheduled.
Currently, if Disney cancels your cruise, they’re offering either 100% of your money back OR 125% as a future cruise credit (IF your cruise was paid in full). If you don’t use the credit within 15 mos, that deal expires but they still return back 100% of the cruise cost to you. This is unusual but not unheard of. But only in special circumstances.
Note: This info is based on what’s been happening so far. No guarantees that Disney’s offers or what we’re seeing will continue. Would be surprising if it didn’t continue as it’s been going, but it’s important to know that Disney can change their offer each time they cancel a new batch of cruises.