My wife and I have been on Reflection, Equinox, and Summit, and Millennium looked almost as nice as the Reflection after being revolutionized in June of 2020. There were only 600 guest on board and by day three most of the crew greeted us by our last name with a friendly and warm welcome. All of the crew was excited to see returning guest for the first time in fifteen months, were always happy and smiling, and greeted us with warm and friendly hellos and small conversation.
Celebrity crew on all our previous sailings have been personable and friendly, but this crew just was over the top.
Breakfast and lunch was buffet for us and the selections and food were good. They still had the same wide assortment even thought there were only about 1/3 of the guest on this cruise and the restaurants were basically empty. No lines to wait for anything.