Just a little word of warning for those who are heading to Paris after the cruise.
http://www.bbc.co.uk/news/world-europe-22098102
Also beware around the Las Ramblas area, it's "gangs" of eastern europeans migrants and they are expert in removing items from you. It happens all over the world, however I had a friend who managed to catch them at it on the Paris metro from robbing her father, however they got away with the lot.
Some tips given to me were, when on a bus or tube was to take a seat, it's harder to take wallets etc whilst seated and keep any bag or wallet away from the people standing in the open bus/tube.
Hope this doesn't happen to you, however I have seen an upset traveller explaining it to
DCL at Barcelona. Forewarned is forearmed.