Also procedures change. What a passenger may have experienced on their last cruise, say in 2021 might be quite different in 2023.
With specific regards to blue and the dining room menus. There are ships where blue and the main dining room share a kitchen or have adjacent kitchens.
Then there are ships were blue and the main dining room are far apart from each other. There are various health laws which prohibit moving food between those kitchens.
And you can imagine that if there is a waiter who worked on one of those ships and then moved to a different ship, they may say “no I can’t get you something from the main dining room”. But maybe on that ship they can.
And finally, when the ships were sailing at 50% capacity, it was easier to accommodate different requests. Now that the ships are sailing nearly full, not so easy.