get_categories with meta query

$today = date('Ymd', strtotime("now")); 				
$args = array(		
'type'  => 'events',	
'orderby' => 'name',	
'order' => 'ASC',		
    'meta_query' => array(	
		      array('key'=>'date',		
		            'compare' => '>=',	
			    'value' => $today,				)			 
),	       
);	       	       

$categories = get_categories($args);	       	       
foreach ($categories as $category) {		        
echo '<button data-filter=".'.$category->slug.'">'.$category->name.'</button>';	       }

I’m building a jQuery filter for a list of events. For this i need a list of all category names used, but only for future events. I’m already using a meta query for the list of custom post type events, but the meta query does not work with get_categories.

How can i list all categories used in future events?