I think, whenever
DCL announces dates for its return to sail (which I still believe is a quite a ways away), you can expect to probably see them also pause new bookings for a period like WDW did (so if you want to be one of the first to be back on DCL, best to have something in 2021 on the books with them). I’m not sure if they’re already capping sailings or letting them fill, but I have a feeling that, much like WDW’s reopening,
the “pent up demand” on Boards like these will not be shared by the rest of the general public, so I’m not sure how difficult the situation will be for them. I think it’s also basically a guarantee at this point that itineraries upon restart of sailing won’t happen as currently-planned (date changes, port changes, etc...). Even though DCL reserves the right to make those changes, they could very well just cancel those sailings and grant those with canceled reservations priority access to rebook. It’s quite possible DCL does for their initial restart period what WDW did for ADRs and FPs during their initial reopening.