Well, it’s not specific to any particular page or template – it’s just that some of the examples relate to the cart page. On taking a second look, though, possibly all you need is a snippet like this one:
$ticket_product_id = get_post_meta( $ticket['ticket_id'], '_tribe_wooticket_product', true );
$ticket_product = get_post( $ticket_product_id );
$ticket_description = $ticket_product->post_excerpt;
You could use this at the appropriate point within the ticket template (of course, the $ticket array must be set so ideally you would use it within the main loop).
Does that help?