Hello,
Glad it was the issue.
There are no setting to change this as the ticketing system was designed to be 100% online.
There is a field you code modify in the plugin itself, but you would have to change that setting after each update to the plugin.
wootickets\classes\class-wootickets.php
Change this: (around line 340)
update_post_meta( $ticket->ID, '_virtual', 'yes' );
To this:
update_post_meta( $ticket->ID, '_virtual', 'no' );
In the next release 3.10 that code will be located here:
wootickets/src/Tribe/Main.php
If you think that is something you would like as a feature I encourage you to visit our User Voice Page and either upvote an existing request or make a new request there.
http://tribe.uservoice.com/
Cheers!