YouBarcelona offers a guest list called Lista Isaac which guarentees free entry into the most exclusive clubs with the best parties in Barcelona. In order to get on the list, you must:
1. Go to YouBarcelona's website.
2. Check the clubs and the day you would like to go in for free.
3. Click JOIN NOW.
4. Fill in the form.
When you get to the door of the club ask for Lista Isaac. You will get your free entrance!