$county_arr = array(
			'key' => '_ct_multiselectbox_4e4980ea9dbd9',
			'value' => array('Cork', 'Dublin'),
			'compare' => 'IN',
			'type' => 'CHAR'
		);
$photography_arr = array(
			'key' => '_ct_multiselectbox_4e46766e7ada0',
			'value' =>array('Reportage', 'Traditional'),
			'compare' => 'IN',
			'type' => 'CHAR'
		);

//not sure why this doesn't work for me, 'wdl_supplier_type' => 'wedding_photographers' does work.
//$supplier_type = array(
//			'taxonomy' => 'wdl_supplier_type',
//			'field' => 'slug',
//			'terms' => 'wedding_photographers'
//		);

$args = array(
	'post_type' => 'wdl',
	//if i remove the meta_query, the query works as expected, with meta_query I get no results.
	'meta_query' => array($county_arr,$photography_arr),
	'wdl_supplier_type' => 'wedding_photographers'

//	'tax_query' => $supplier_type
 );