What does it include?
No. There are no free tickets.
The access is the same as for the rest of the visitors at access 9. More clues? It is in front of the Barça Cafe. Here's a map.
There is no need to arrive in advance, but it is important to respect the confirmed time on your tickets as there is a limited capacity for each session.
The coaches will have a drop-off zone for passengers, but there is no parking area.