We all know the routine, by booking early you get the pick of cabin and the security of knowing if the price goes up, you are locked in. You should only book at this point if you are happy with the price you are paying.
If you are booked at a certain price Celebrity cannot go back and say the demand is up we want $500 more. You can’t have it both ways, either book early with a price you are comfortable with or wait and see if you can get a late bargain. We all know the rules and the risks of booking early, don’t complain when it doesn’t work out in your favor.