Q: Can we pay for the coach to Cambrils from Barcelona Airport on the day or do we have to book on line?
A: Firstly we would need to identify which service you are relating to since there are different services.
If you are referring to the Bus Plana service, operating from Terminal 1 then you do no need to reserve the coach in advance, you can simply turn up for the service. You can also reserve online in advance if you want to from the website. However this does not guarantee you a position on the bus if it is full. If the bus is full however and there are more than 3 people waiting the bus company will send for another bus to transfer you.
Minibus Airport Shuttle transfer from BCN Airport to Cambrils
If you are referring to the minibus airport shuttle transfer service running from Barcelona Airport you would need to arrange this in advance and book online. The difference between the minibus service and the Bus Plana coach service is that you would be guaranteed a position on the minibus service with an advanced reservation.
The minibus service guarantees you have a position on the minibus and your space will be reserved. This is handy if you have a long flight and do not want to risk the possibility of more waiting time for your transfer should the bus be full.
There is also a private car transfer service from Barcelona airport to Cambrils. This is a custom service where you would have a driver waiting for you at the airport. He will be holding a sign with your name on it and will assist you with your luggage to the car.
There are different vehicle options from 1 to 55 people. Follow the link for more information on this private transfer service.