if ($orig_cart_items) {
$field_key = "field_59aff2511ca92";
$value = array();
foreach ($orig_cart_items as $item) {
$value[] = array(
'festival_id' => $item['show_festival_id'],
'edition_id" => $item['show_edition_id'],
'movie_id' => $item['show_movie_id']
);
} // end foreach
update_field($field_key, $value, $post_id);
} // end if