Wear dark clothing as if you were a staff member and a cap, smoke a cigarette near the stairs that lead to the stages, and then accompany a staff member as if you were going to the same place. If someone approaches you asking for identification or a badge, say "Marcelo (or any other common name) saw that I didn't have one and asked me to speak to Adrian. I went there and couldn't find him. Since we're setting up and doing the sound check, I don't have time to see that, so he asked me to go back to the back and get a 10-meter p10 p2 that they need" or something like that, speak with authority and look very tired. Approach people who look like freelancers and give them orders with a lot of energy, so that they think you're really a staff member. Don't do this near someone who looks like an organizer. Then just go to the area you want and bye.