Show cost per night in cart for WooCommerce Accommodation Bookings

bookings-functions.php

add_action( 'woocommerce_get_item_data', 'wc_ninja_add_custom_product_meta', 15, 2 );
function wc_ninja_add_custom_product_meta(  $other_data, $cart_item ) {
	if ( ! empty( $cart_item['booking'] ) ) {
		$item = $cart_item['booking'];

		if ( 'night' === $item['_duration_unit'] ) {
			$per_night = $item['_cost'] / $item['duration'];

			$other_data[] = array(
				'name'    => 'Cost Per Night',
				'value'   => wc_price( $per_night ),
				'display' => '',
			);
		}
	}
	return $other_data;
}