Liberty of the Seas is RCI's newest and biggest ship. It has more facilities than any other cruise ship and those who appreciate the latest type of gimmicks will be more than happy with the experience. We have been on both Princess and Carnival cruises so I will compare where appropriate so that people faced with choices can understand the differences they will encounter.
Embarkation: we transferred from our rental care via the Hertz bus. Getting on the ship was reasonably smooth and took about an hour; not too bad given that over 4000 people are boarding. Times compare well to Princess and Carnival which were closer to two hours.
Our cabin was a D2 balcony which was reasonably sized, clean and well cared for. It was fractionally larger than the Carnival cabin which was also a balcony. Our Princess cabin was an outside so slightly smaller. In practice there is little difference in cabin facilities between the lines and you will probably be more than happy with your cabin. Cabin staff on all three lines have been exceptional and we have never have had a problem with cabin service.