The password is just good marketing.
If you are asked for it, it probably means you do not appear rich or slutty enough. In case of such, just say the street number (altura) on the wall outside. It is four thousand-something. Then type this number into the phone booth as-well to open the wall.
I will go tonight and try with a made-up password, "Beetlejuice" to see if they really care, or just a stare down the nose and a curt, "Of course I know the password" and then walk on. Either way, it isn't important.
Get there before 1am.