public static function is_hidden_on( $post ) {
		if ( is_numeric( $post ) ) {
			$post = WP_Post::get_instance( $post );
		}

		if ( ! $post instanceof WP_Post ) {
			return false;
		}

		$is_hidden = get_post_meta( $post->ID, self::HIDE_META_KEY, true );

		// By default non-existent meta will be an empty string
		if ( '' === $is_hidden ) {
			/**
			 * Default to hide - which is unchecked but stored as true (1) in the Db for backwards compat.
			 *
			 * @since 4.5.1
			 */
			$is_hidden = true;
		} else {
			/**
			 * Invert logic for backwards compat.
			 *
			 * @since 4.5.1
			 */
			$is_hidden = ! $is_hidden;
		}

		/**
		 * Use this to filter and hide the Attendees List for a specific post or all of them
		 *
		 * @param bool $is_hidden
		 * @param WP_Post $post
		 */
		return apply_filters( 'tribe_tickets_plus_hide_attendees_list', $is_hidden, $post );
	}