As First time cruisers, we were very happy with our vacation on the Liberty. My wife and I have been to many resorts and vacation spots across Mexico and the Caribbean, a few with our young children in tow and didn't know what to expect from the cruise.
Got to Miami on Friday noon and stayed at the Four Points on Collins ave. I had used points for the hotel and had a free day rental from National so we took the car from the airport to the hotel for the overnight. National has an office directly across from the hotel so we dropped the car there the next day. They do offer a shuttle to the Port but it doesn't run regularly (depends on what ships are in/out and what customers they have to transport). We planned on taking the free shuttle but the timing wasn't good so we cabbed it from the hotel ($28).
We got to the terminal about 1:10, gave the bags to the porter and went inside right away. Boat was set to sail at 4:00 ( or maybe 4:30?) We had to wait a bit to go through security, then another 20 minutes to get your sail pass etc, but we were on the ship within an hour.
We stayed in 8518 the second balcony from the front of the ship, port side, deck 8. It was very quiet - I don't recall hearing much of anything in the way of noise outside in the hall or from above or below. There was noticeable movement in the rougher seas (but quite gentle in my opinion - i actually found the motion relaxing when trying to sleep). We had the two beds together and a sofa bed for the kids and as far as sleeping went, the arrangements were very good. Overall, the rooms are tight, but you are on a ship so it is expected. with 4 people in a room, you use up all the available closet and drawer space, but i think there were about 20 hangers in the closet and more shelves. You just had to be creative.