Hi Sara,
Thanks for checking out Event Tickets Plus!
You can indeed sell different types of tickets with this extension. Since it uses WooCommerce (or Easy Digital Downloads) to handle checkout as well as all payment processing, users can add multiple tickets to their cart and checkout all at once.
There is not currently support for a donation field, but you could potentially use a third-party plugin to add this functionality. I did a quick search and found the following:
https://wordpress.org/plugins/yith-donations-for-woocommerce/
https://wordpress.org/plugins/donations-for-woocommerce/
https://woocommerce.com/2016/01/woocommerce-for-nonprofits/
Tickets are essentially WooCommerce simple products, so third-party extensions for WooCommerce typically work with tickets the same way that they would with traditional products. However, you would need to test it out to make sure that it will work the way you want it to.
If you’d like to take Event Tickets Plus for a test run, we do offer full refunds within 30 days of purchase, so feel free to do so! Please let me know if you have any other questions.
Thanks,
Jennifer