Earlier tonight, Square Enix held a Final Fantasy 20th Anniversary Celebration at San Francisco's Sony Metreon. The event celebrated 20 years since the first FF hit the Nintendo Entertainment System. Hours before, fans started lining up, including blogger and Final Fantasy fan Bryan Veloso. That's Bryan in the pic. He wasn't able to take any photos inside the event, because Square Enix wouldn't allow that. Which begs the question: why? If it's a success, pictures of the actual event are...