I've just heard about this earlier on a post and have looked all over Royals site and don't see anything. Perhaps it is a seperate email they send to loyal royals???
Mariner-05/06 & 10/09
Oasis Inaugural Cruise-12/09
Monarch-03/10 & 07/10
Mariner; RSS- 10/12
S. Caribbean; Serenade; RC; 12/23/2015-01/04/2016
Australia; Celebrity Solstice 11/27/2016