gistfile1.txt

<?php $servicesarray = array(
   "Food" => "knifeandfork.png",
   "Alcohol" => "wineglass.png",
   "Food & Alcohol" => "tray.png",
); ?>

<dt class="event-label event-label-updated"><?php _e('Services:', 'tribe-events-calendar') ?></dt>
<dd class="event-meta"><img src="<?php echo $servesarray[ tribe_get_custom_field('Services') ]; ?>" /></dd>