Hi Chris,
Thanks for reaching out! To auto-complete orders based on whether or not they only contain tickets, you would need to dive into the code. I found this snippet from WooCommerce, which you could modify to conditionally auto-complete based on the products in the order. I would also recommend taking a look at our themer’s guide and functions list as a place to start. If you would prefer to have the code done for you, we also have a list of recommended developers that you could contact.
Alternatively, you could also try out this third-party plugin. I haven’t tested it out, but it looks like it might do what you’re looking for!
Please let me know if you have any questions. If you decide to do the customization and get stuck with the code, please let me know and I’ll be happy to point you in the right direction!
Thanks,
Jennifer