For entries into the Regional Gold drawings, purchases have to come from a Regional Supporting Dealer (list on the regional event page). Any full size piece should qualify for a ticket, not just the regional piece. They should have the entry blank to send or give to you.

For the Gold Event Piece you have to buy a full size pice from the sponsoring dealer (no Little Lights). Not clear as to whether you have to be present to win the gold but I believe you do.