WooCommerce - Change order notes placeholder

gistfile1.txt

add_filter('woocommerce_checkout_fields', 'custom_woocommerce_checkout_fields');

function custom_woocommerce_checkout_fields( $fields ) {

     $fields['order']['order_comments']['placeholder'] = 'Your custom placeholder';

     return $fields;
}

Thanks 👍

echo "Thank you!";

any chance to make this mandatory as well?

Thank you very much! :)