if (isset($_REQUEST['planned_arrival_date']) && DateTime::createFromFormat("Y-m-d", trim($_REQUEST['planned_arrival_date']))) {
      $planned_arrival_date = DateTime::createFromFormat("Y-m-d", trim($_REQUEST['planned_arrival_date']))->getTimestamp();
    } else {
      $ok = false;
      $msg .= error(_("Please enter your planned date of arrival."), true);