We stayed overnight in Miami at the Hampton which met our needs just fine and seemed a fair price. We had flown in from Detroit the day following the big blizzard and were delighted to get there!
Embarkation the next day went smooth - RCCL seems to have it down to a science.
Liberty is a huge ship and certainly had many activities to keep us as busy as we wanted to be for the first two days at sea. They now offer some cooking classes, have a big outdoor movie screen by the pool, and have a little cupcake shop on the inside mall - along with parades with characters for the kids. Our room was an inside cabin, but overlooked the promanade.
We had an inside cabin overlooking the promanade. We enjoyed watching some the parades and street entertainment without being down in the crowd. I worried that it might be noisy since we were just one flight up, but we had no problem with noise!