Good afternoon Sally and welcome back!
Thank you for reaching out to us.
I would love to help you with this topic.
If you haven’t already done so, you might want to read our Themer’s guide to get a sense of how that works.
Which part of single-events.php handles the display of the venue (ie where it shows and the order in which the address, name and map appear?)
To answer your more specific question, the order is established in the following file: /wp-content/plugins/the-events-calendar/src/views/modules/meta.php
If you change the sequence of how the different sections of the meta are called you will change the order in which they are displayed.
If you want to, you can even tweak things further by editing the content of each of these sections, e.g.:/wp-content/plugins/the-events-calendar/src/views/modules/meta/venue.php
Let me know if that helps.
Have a great day!
Geoff B.