We did the Dec 26 cruise on the Magic in 2019 (and we are on the 26th Fantasy this year too!). There was definitely still Christmas decor around, but I don't think there were any Christmas related events, but then again we weren't looking for them. We intentionally booked the only 'unMerry' option we could get
Looking back at my pictures from the Magic, there were wreaths and garlands in the lobby/atrium areas and shopping areas, and I remember there being a big Gingerbread house by the guest services desk. Not a lot of decor on Castaway but a little here and there.
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