We stayed for a week in Barbados before boarding, which we found to be better rather than rushing straight onto the boat. We stayed post cruise also.
We arrived at the cruise port about an hour before 4.00pm (boarding time) and found the line for checking in. We were given a temporary card and then could board from 4.00pm. When we boarded we had to queue to get our proper cards and do the financials etc. Our bags came within an hour. Before we sailed we had to go the safety briefing with our life jackets. This was repeated the next day in the morning (without life jackets).
The boat is very interesting - great if you love sailing. If you get sea sick then it won't be for you! it moves all the time so everyone is staggering around constantly but that's part of the charm. You also move in bed a lot! when going up and down decks the stairways are narrow with sprung doors at the end - it's quite amusing watching people being eaten by the doors (especially when they've had a drink or two...).
Adequate for 2. The only thing to remember is take hair conditioner as there is none in the cabin. Kept immaculate. As this is a forward cabin there was a lot of movement but I think all cabins will be the same.