Welcome to the forum, vade. Forum guidelines state that you are required to provide context. Giving us a full sentence and additional information enables us to provide you with the best advise we can.
Most often, to "nail a venue" is used when planning or announcing an "event" (conference, concert, party, reception, recital, etc.). It means that you've chosen or contracted the location/building/facilities/place where the event will occur.
Thank you very much indeed for your interest. I´ll give you the context of my phrase: it´s the beginning of Prof. Randy Pausch´s last lecture at Carnegie Mellon Universitiy (unfortunately, he´s seriuously ill):
"If you had one last lecture to give before you died, what would it be?I thought, "dammn, I finally nailed the venue and they renamed it".(laughter)"
Let´s hope this helps!! I´d really like to know what he´s saying. Thanks again
Do they really call them now the Journey lectures? I hope it´s not a black joke... Ok, I really don´t know much about those letures, and what you say makes sense to me, yes, I think you have definitvely hit the nail!! Thank you so much
It’s wonderful to be here. What Indira didn’t tell you is that this lecture series used to be called the Last Lecture. If you had one last lecture to give before you died, what would it be? I thought, damn, I finally nailed the venue and they renamed it. [laughter]
It sounds to me that he is joking that the lecture series used to be called "The last Lecture", but since it was apparently going to prove true in his case, they re-named the lecture.
To "nail a venue" means to plan and organize the event (i.e. chose the location, fix the date, etc) Randy Pausch decided to leave the university so as to fully dedicate himself to his family and particularly to his kids when he knew to have only a couple of months left to live. In the USA it is common for teachers leaving the university to take a speech as a last lesson. He decided to talk about time management (which he used to teach) particularly about: importance, motivation, target, planning, priorities so as to leave a life lesson to his students, colleagues but most of all to his kids and wife. In that particular case, the university’s staff founded the word “last” really embarrassing …that’s why they decided to rename the event when Randy accepted to take his last lesson.