¿El alquiler implica “burocracia”?

No. All you are asked to do is sign an agreement covering the rental of the box and provide adequate identification for your protection as well as ours. A box is then assigned to you, and you are given two keys to it. Whenever you wish to use it, you are requested to sign your name on a slip which is quickly compared with your signature on the original agreement, and you are then given access to the box.