Hi there!
I was lucky to find a snippet that solves one of my problems:
https://theeventscalendar.com/support/forums/topic/event-details-into-woocommerce-transactional-emails/
After some fiddling, I managed to insert the snippet into the functions.php of my child theme without breaking site.
It seems to be running, although the order receipt email does not contain any event information, such as time, date, venue and so on.
How can I trouble shoot this, control that the snippet works as intended ? I run Event Calendar Pro, Event Tickets plus.