I like the change, mostly to reduce packing if we choose to eat at Palo in the future. We are on the med cruise this week, and we have met three families whose luggage was lost by Delta. Some had a difficult time finding replacement clothes. None had their luggage a week into the cruise, despite Delta promising they would send it to Santorini.
We had packed only carryon for that very reason. While I have slacks and a dress shirt for formal night, I could not have fit a suit coat or dress shoes in my carryon.
By the way, if you can make it work, carryon has been fantastic. No waiting for for your luggage at the airport, easy to move in and out of hotels. Great to have everything with you as soon as your room is ready. No putting your luggage out the night before disembarking. Much quicker to pack up, since you have so much less stuff. We haven't missed a thing, and have even found stuff we can leave home next time. If we can do two weeks in Europe like this, anyone can. Just look into the one bag movement for great tips.