There will be a rally at noon at Jack London Square's holiday tree featuring live music and a costume contest.
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Then, the Santas will go on a pub crawl and finish at an after party at E-Sports Arena.
Participants can bring non-perishable food items to benefit the Alameda County Community Food Bank.
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If you're planning on going to SantaCon, tag your photos and videos on Twitter, Instagram, or Facebook with #abc7now.