Hi Seth,
Thanks for checking out Event Tickets Plus!
There is not a specific integration with WooCommerce Memberships, but ET+ does integrate with WooCommerce and does include the option to limit ticket sales to logged-in users only. If you need a more detailed level of control over which types of users can purchase tickets, then you would really need to test it out to see if you can get it working the way you need – tickets are essentially WooCommerce simple products, so they typically do work pretty well with WooCommerce extensions.
Sending admin notifications when sales have hit a certain point is not something that is built-in to Event Tickets Plus, but you might be able to get this set up using a third-party add-on.
Email reminders to attendees is also not currently built-in, but you can export the list of attendees and import it into an email platform to send emails out that way.
We do offer full refunds within 30 days of purchase, so if you’d like to take Event Tickets Plus for a test run, feel free to do so! Please let me know if you have any additional questions.
Thanks,
Jennifer