My wife and I sailed on Celebrity Millennium in June from St. Maarten to the southern Caribbean. We loved that cruise so we booked on the Millennium for it's first Alaska Cruise (Post Pandemic) sailing from Seattle July 23,2021 with stops in Ketchikan, Juneau and Skagway.
We have sailed on Millennium before and like the vibe.
The guests ranged in age from young families to seniors with a nice mix of age groups and a lot of energy.
We like a Cabin forward on an upper deck so we don't have a lot of traffic going by outside our door.
Celebrity has great beds and because Millennium has recently been Modernized everything is bright and new.