It seems improbable that a single tongue could be dipped in around 270 different Zinfandels during one event, but this would be the place to try. Looks like they're spreading the winemakers across two locations within Fort Mason too.
Anyone planning to attend this year? Someone offered to get me into the Saturday event in exchange for some lines on this blizzog, but I'm not sure it'll work out. I generally prefer visiting the winemakers I want to learn more about anyway. The treasures of Sonoma, Napa, and yes Contra Costa, Amadour, Santa Cruz counties are all within reach.