Cucina is not free on the Celebration. It is complimentary right now on the Mardi Gras. Per Carnival...
Mardi Gras Reservations: For a limited time only, Chibang!, Smokehouse Brewhouse and Cucina del Capitano will be included in the guest's cruise fare. We are not taking reservations pre-cruise or on board for these three venues. Guests will be seated on a first come, first served basis depending on party size. If we cannot seat them immediately upon arrival, guests will be able to join a virtual waitlist using the HUB App. Guests will receive a notification via the HUB App when their table is ready.
There may be the anticipation of doing the same when the Celebration sets sail.
Yes I am sailing Celebration in June and it's not listed on my cruise manager either Saphir!
You can pay & book this restaurant in advance. I'm sailing on the Sunshine in December of this year and it is showing in my cruise manager.