A little helper function for EE4 to use the old EE_META shortcode from EE3 on an event custom post. Idea from http://eventespresso.com/topic/how-to-use-ee_meta-in-event-expresso-4-for-backwards-compatibility/

ee_meta_for_ee4.php

function display_custom_meta_in_ee4( $atts ){
    global $post;
    extract( shortcode_atts( array( 'type' => '', 'name' => '' ), $atts ) );
    $post_meta = get_post_meta( $post->ID, $name, TRUE );
    return $post_meta;
}
add_shortcode( 'EE_META', 'display_custom_meta_in_ee4' );