Hi,
Thanks for purchasing WooCommerce Tickets.
I can help point you in the right direction on this customization, but I am unable to provide all the steps for it or to troubleshoot each issue. I can always answer questions about it as they apply to our plugin WooCommerce Tickets.
WooCommerce Tickets does not modify the checkout process in anyway so to modify that process you are actually just modifying WooCommerce itself.
I found these articles that can help out with that modifications:
http://uploadwp.com/customizing-the-woocommerce-checkout-page/
http://docs.woothemes.com/document/tutorial-customising-checkout-fields-using-actions-and-filters/
This plugin might help out too:
Checkout Field Manager (Checkout Manager) for WooCommerce
Let me know if you have any follow up questions.
Thanks