Embarkation at Southampton was an absolute breeze, in through and on the ship in 15 minutes! If you are driving to Southampton be sure to ask for free parking when you book.
Get there early, you might not be allowed in the staterooms until 1pm but you have the rest of the boat to explore.
Southampton town Centre is a few minutes walk away from the Ship, with an absolutely cracking shopping centre, if you have the time, get off and have a look around the town its cracking.