Q: We are 5 adults with 4 luggages, can we fit in one taxi to go to store the luggage for few hours before we check in the cruise, because we arrive early in the morning.  
                                                                                                                                                                   
A: You can travel to Barcelona Sants Rail station from the Airport on the RENFE train that runs from the airport. You can easily take on you luggage on the RENFE train.  Barcelona sants (Estacio Sants) have a manned luggage storage department and you can leave your luggage there.

Barcelona taxis will only accommodate a maximum of 4 people and no more.  Therefore if there are 5 people you will need 2 Taxis.

You say you only have a few hours - this does not leave you much time to see much of the city. If you had half a day then perhaps it is worth storing your luggage and having a look around but with only a few hours then you really don´t have much time.

For more information on Barcelona taxis, Transport between Barcelona airport and the city centre etc see our Related Articles below.