Thanks for clarifying Tony. So I don’t know exactly what is inside your current template but in essence, instead of:
echo "<td class='tickets_description'> Available Spaces: ";
echo $ticket->stock;
echo "</td>";
You could do something like:
echo '<td class="tickets_description">';
if ( $ticket->stock > 0 ) echo 'Available Spaces: ' . $ticket->stock;
echo '</td>';
I hope that gives you the general idea. As it is a customization though (in fact, a customization of a customization!) we’d need to leave you to iron out any further details.
Thanks again 🙂