Hey John,
Something like this is possible for sure, though it would require custom coding unfortunately.
Do learn how the custom coding would work, check out our themer’s guide here → https://theeventscalendar.com/knowledgebase/themers-guide/
Then you just essentially use those principles to modify the The Events Calendar file in src/views/tickets/email.php. This is the email which includes tickets, and so you can add any text or other information you would like there.
I hope this helps!
Cheers,
George