WooTickets 1.0.1 default quantity

woocommerce_quantity_input( array( 'input_name'  => 'quantity_' . $ticket->ID,
                        'input_value' => 1, // This is 0 by default
                        'min_value'   => 0,
                        'max_value'   => $product->backorders_allowed() ? '' : $product->get_stock_quantity(), ) );