I get there before opening to chat with vendors setting up. Once, a seller showed me a box of Atari games they hadn't put out yet. Do you have any strategies for beating the crowd?
Oh totally, chatting them up is key. My other move is to walk the whole place once fast, no stopping, to spot anything really good before going back for a closer look. Honestly, being friendly and a regular has gotten me my best finds, way more than just rushing around. Half the fun is the talk anyway.