What Royal Caribbean Crown & Anchor unlockscruise · starting from Diamond · unlocks 3 programs (3 free)
Diamond status in Royal Caribbean Crown & Anchor opens two real paths forward, both free and both matches rather than card offers. The simplest is an automatic tier match into 
The Celebrity match is the easy one: since Celebrity and Royal Caribbean sit under the same corporate parent, the move to Elite is essentially automatic once you enroll through Celebrity's site or app, with no expiration stated. The first leg of the other route works the same way — Diamond gets you MSC Voyagers Club Gold directly — but it comes with real strings attached: you can only claim it once, and the matched status lapses if you don't sail MSC within three years of getting it.
From there, that MSC Gold status is what Explora Journeys wants to see: present it and Explora runs its own one-time match into Explora Club Gold, a process that takes about ten business days. It's a longer route than the Celebrity match, but it's still free, and it's the only way listed here into Explora's top tier.
Miles