What Cruise Lines Post their Deals?

[cheffip]

I know about Celebrity's "Xciting Deals" and RCCL's "Sales Event". Do any of the other cruise lines have a regular listing of weekly specials? I've noticed that Celebrity and RCCL often have much reduced single supplements as part of their specials which is particularly appealing for us solo cruisers.:)

[Traveler353]

Carnival post all their specials/deals on their web site.