My DH and I live in Miami and took Super Shuttle to the port. Embarkation was easy, although we were surprised that there was no priority boarding for Silver Latitudes members. We boarded around 12:00 noon.
Here are the Pros in my opinion:
Once on the ship we left our roll-on luggage at Headliners Lounge which made it easier to get around since the cabins were not ready until 2:00PM.
Narrow cabin, but has huge enclosed/sheltered/in-hull balcony, great view, highly recommend this cabin. Also very quiet. First cabin forward, portside.