gistfile1.txt

add_action( 'woocommerce_order_item_meta_end', 'custom_woocommerce_order_item_meta_end', 10, 3 );

function custom_woocommerce_order_item_meta_end( $item_id, $item, $order ) {
     $product = $item->get_product();

     $locations = get_the_terms( $product->get_id(), 'my_custom_taxonomy' );
     echo '<br/>';
     echo '<div style="margin-top: 20px;">';
     foreach( $locations as $location ) {
          echo 'Location:  <b>' . $location->name . '</b>';
          echo '<br/>';
     }
     echo '</div>
}