The noise when dropping the Anchor depends on cabin location. When booking a ship cabin it is like real estate, Location, Location, Location. My cabin on the Carnival Glory was all the way forward and oh boy, at 5 am when they dropped anchor I knew it.
Your cabin was 3rd from the front. For a quieter cabin I suggest mid ship, not next to elevator or stairs and not over or under public spaces. I go to the Vacations to go web site for the ship lay out so I can see what is around the cabin.
RCI tends to send it's older ships off to one of its European cruise lines. since the ship will be redone for the European market, they will not put any $ into it until that time. A bit of research before a cruise can make a big difference on the ship you choose or the expectation you have for the trip.