We wanted to cruise off-season with many days at sea, as those are the days we like most. So we chose this transatlantic cruise sailing from Barcelona: it was pretty easy for us to reach the pier, there were many days of navigation, and cruise stopped at some places we had never been before.
The drawback of this type of cruise is the long flight back home. We discovered that in a west-bound transatlantic days are longer (clocks were set back times during the cruise), but, of course, the difference in hours is recovered suddenly with the return flight and you get jet-lag for a few days.
The boarding in Barcelona was pretty chaotic and with a long wait. We had to queue in the terminal for half an hour to check in luggage and get our sea-pass cards, and then wait an hour and a half more until we could enter the boat.