Good evening Evan and welcome to the Events Calendar forum!
Thank you for your interest in our products.
We’ll be glad to answer your question.
Can I create a WP account and use your calendar as an iframe in my other site hosted on Wix?
That is a great question. At this point our plugin absolutely needs a complete self-hosted WordPress installation to live.
I have never tested the iframe embed, but that is most probably feasible.
You could run that test and see how that goes. Try it with our demo site: http://wpshindig.com/events/
Finally, stay tuned, because it is not impossible that we could offer our calendar as a cloud service at some point 🙂
Best regards,
Geoff B.