There have been a few threads asking about Black Friday deals with Celebrity, so here's some info, together with some info about Celebrity's winter promotion.
Black Friday / Cyber Monday
Promotion booking window: November 26 - December 3, 2019 for sailings departing January 1, 2020 - May 3, 2021
Offer: 25$pp deposits + Get one free additional perk with "Sail" and "Sail Plus" price tiers - can be combined with the "normal" November promotion, ie. 100$ additional OBC for all