$country_arr = array(
			'key' => '_ct_multiselectbox_4e4980ea9dbd9',
			'value' => '(USA,Australia)',
			'compare' => '=',
			'type' => 'CHAR'
		);
$vacation_arr = array(
			'key' => '_ct_multiselectbox_4e46766e7ada0',
			'value' => '(Sun,Ski)',
			'compare' => '=',
			'type' => 'CHAR'
		);

$args = array(
	'post_type' => 'wdl',
	'wdl_supplier_type' => 'wedding_photographers',
	'meta_query' => array($country_arr,$vacation_arr)
 );