No, Jack and Sally are no longer appearing on the ships. They replaced them with Minnie, Daisy, and Clarabelle as the Sanderson sisters last year. There is no indication that Jack and Sally will be returning to DCL.
Sadly did Fantasy last year and was the Minnie and friends as Sanderson sisters with no Jack and Sally. It was also a bit annoying as they only had one time to meet Minnie and one time to meet Daisy in their regular halloween costumes as there were so many times for them as Sanderson Sisters.
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