We have been on over 40 Celebrity cruises and have had a great time on each. I would guess that I am not the only one who has never written a review. When something goes wrong people can be quick to tell anyone who will listen. When things go good they not so much.
At one point I managed a large Payroll department responsible for paying 3000 + employees, mostly hourly with varying schedules, overtime, etc. If someone was shorted a hour they were quick to let us, their boss, my boss and anyone else know , but in 4 years only 2x did anyone call, write or tell there boss when their checks were consistently accurate and on for months.