If you try to farm up a full set of 476 in one day, you're going to claw your eyes out.
Actually, AV weekend is starting on March 8th. Supposedly 3 days after patch 5.2 comes out (5th). It's not in one day, but that's pretty damn convenient. Especially if you're Alliance. People can just afk and watch TV shows while they do AV. I know that's what I'm doing.