Barcelona Airport to Cruise Port Terminal on Saturday morning?

we will arrive at Barcelona Airport before 8am on a Saturday and will go directly to the port to catch our cruise, but cruise check-in opens at 11am, is there anywhere in the port we can hang around (cafes maybe) between 9am and 11am on a Saturday morning, we will have luggage so it will be difficult to walk for a long distance, any suggestions how/where to spare those couple of hours?