Halloween in San Francisco is a huge party for witches,\r\ngoblins, and zombies of all ages. For the grown-up set, there’s the Halloween\r\nPub Crawl San Francisco on the day itself. Can’t get out on a Wednesday night?\r\nThe weekend before All Hallow’s Eve, there’s the Happy Hour Halloween Pub Crawl\r\nin Union Square on Friday, October 26, produced by PubCrawls.com. Check their\r\nwebsite for the latest updates, http://pubcrawls.com/san-francisco-pub-crawls.php.\r\nIn fact, all weekend long, there are ghoulish opportunities for flaunting that\r\nfang-tastic costume. On Halloween night, The Mad Hatter’s Ball at 1015 club,\r\nfeatures the Frite Nite Room and a slew of spooky dance mixes. For family fun,\r\nhead to the Noe Valley Harvest Festival on October 27, which is free and has\r\nlive music, jumpy houses, craft booths, a farmer’s market, vendors, pumpkin\r\ndecorating, horse-drawn wagon hay rides all in a charming San Francisco\r\nneighborhood.