Let me tell you a little story

I went in a crowd to the anime all-nighter in... 2006! Woo, feels like a long time ago now. Anyway, since then, I have missed every all-nighter. Last year I couldn't find any information on it, always finding the "sold out" page for the 2006 one, until I finally found it, and I was too late. This year, I'd been thinking about the allnighter, and thought; "Since it's been april, I've probably missed it." But then I just randomly typed in "Anime all-nighter" on the 7th of May, and rawr! I had missed it by ONE day!
So what I was wondering is, are there any other anime all-nighters this year? Or is it strictly a 1 year thing? I really want to finally go to one again, but I have a feeling that in a years time, I'll have forgotten!
Thanks!