In answer to my question (and in case anyone is interested), this seems to be the best solution:
<?php
$service_name = $post->_cmb2_service_name;
?>
<p><?php echo $service_name; ?></p>
In answer to my question (and in case anyone is interested), this seems to be the best solution:
<?php
$service_name = $post->_cmb2_service_name;
?>
<p><?php echo $service_name; ?></p>