Hi,
Thanks for the interest in WooCommerce Tickets.
I have responded to your questions below.
1. Does the plugin support promo codes?
Yes it supports the WooCommerce Coupons, the tickets are WooCommerce Products with some extra fields.
2. We need to collect accommodation information, can we include additional information as part of the checkout process? Such as accommodation or food related?
Currently all tickets are assigned to the purchaser so if they buy 4 tickets they are all under their name. We do not have the ability to get extra information during the checkout process, but you maybe to use a plugin such as Checkout Manager to do that. https://wordpress.org/plugins/woocommerce-checkout-manager/
3. Is the information being stored as tickets or as customers in the woocommerce backend?
Technically both, there is a order saved in WooCommerce and tickets are generated in the Attendees List Per Event.
I would review our New User Primer for all the features that WooCommerce Ticktets has:
https://theeventscalendar.com/knowledgebase/new-user-primer-woocommerce-tickets/
The features are standard for all our ticketing plugins.
Let me know if you have any follow up questions.
Thanks