What New Year's Eve is to Times Square, the Halloween Carnaval is to West Hollywood, packing the streets with what may be the world's largest Halloween party. Best guess is that 500,000 celebrants show up in individual or group costumes, dancing in the street as they pass DJs and live entertainment on outdoor stages and snacking and imbibing from vendors, trucks and local establishments. VETERAN'S TIP: Whatever your costume, wear comfortable shoes for the long, wild night ahead.

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