Hi Jake,
Thanks for reaching out to us on this! I’ll help you here…
SO first step is to actually input the link html tag in the ticket description field in the back-end. Once that’s in place you’ll need to create a template override of the template that renders the ticket (more on this on the themer’s guide). For example if you are using RSVP tickets, the corresponding template is wp-content/plugins/event-tickets/src/views/tickets/rsvp.php. Once the copy of the template is in place go ahead an edit the line that outputs the ticket description (line 77 in for RSVP) and change esc_html for htmlspecialchars_decode. It should look like this:
<?php echo htmlspecialchars_decode( $ticket->description ); ?>
With that change you can display html in the description field!
Please let me know if you can make it work on your side or you still need help,
Best,
Nico