Fans of the Tribeca Film Festival will criss-cross town for feted new indie films, many of which are making their NYC debut. But we all know attending the festival is about more than sitting in front of the screen. There's the eating (beyond popcorn), drinking (you'll want to be an armchair critic) and if you're one of the fanatics waiting in line, searching for free bathrooms (remember to buy a coffee or politely ask first).