We love Barcelona as a DIY port of call. We were disappointed to find out we would have to pay £10 per person return to get to the bottom Las Rambla (1 mile journey to get you out of the port grounds which seemed over priced). We took the girls and walked up La Rambla and shared a jug of Sangria and over ordered a load of Tapas which we all enjoyed. It was a good change of scenery and food from the ship. You need to be wary of pickpockets as you would in most large cities so usual rules on taking less valuables, closed bags and being suspicious of anyone/group of people getting too close to you with signs etc that hides what they are doing with their hands.