There are already quite a bit of people at the Palau St. Jordi in Barcelona, a bit of a chaos to be exact. When you arrive you will get a number and you have to be present at 20:00 and 06:00 local time to be ‘counted’.
When you are there with more people, at least one person has to stay overnight, for a maximum of four people. Someone from Live Nation was present and the list they have now, they will be dealig with.
Thanks to Dave Crombeen