Did you do the 11 day out of Puerto Rico? Might have been with me.
Here are my findings as of 2 days ago when we got off the ship:
457.525 was a mix of DMR and analog. Mostly DMR. The only people I saw with analog radios were the restaurants, and they used them exclusively. Everyone else on board had DMR radios. CC01 and CC03 were used on the DMR side, with several talkgroups.
457.5375 is DMR and appears to now be used by the Engineering folks. "Starting Diesel Generators," and calls of the like were used prior to leaving port. CC14
457.55 also DMR and was used by both Security and general communications back and forth between the bridge and other entities, especially when leaving port and pulling in to port, where the bridge communicated with various checkpoints. CC03 and CC11 were heard. Bridge traffic took place on CC02.
Shore excursions do not use analog anymore. This is a change from just a year or two ago when I was on the same ship. They are now going through one of the DMR repeaters, but which frequency is unknown.
I did not hear any traffic at all on 457.5625, 468.0875, or 468.3125.