Finally I got the confirmation for my visit to Alcatraz in March 2016. Took some time because the tickets were sold on the official homepage, but with a little bit of more money and a third party site I got the confirmation today.
Last time I visited San Francisco I didn’t get the chance to do it, but everybody told me that it was a very good experience and I just had to see for myself.
But don’t worry, I won’t stay there. 🙂