Hi Richard,
Thanks for checking out our plugins!
Yes, Event Tickets Plus lets you add custom fields (text, radio, checkbox, or dropdown) to tickets so that you can collect additional information from them when they RSVP or buy a ticket.
Unfortunately, those fields will not be exported in the CSV without some code customizations. If you are handy with code and would like to give it a shot, I would definitely recommend taking a look at our themer’s guide and threads like this one, which have some great information to get you started. While we are currently unable to offer code customizations, we are always happy to answer any questions!
If there is anything else I can help you with, please let me know!
Thanks,
Jennifer