Hi, Jan. Thanks for getting in touch about the features you’re looking for.
You’re spot on about the Community Events add-on enabling users to create events. You can use that add-on with the free version of The Events Calendar.
Unfortunately, at this time we do not offer a built-in solution that allows users to RSVP to events. It’s not ideal, but many of our users have found success using Eventbrite or WooCommerce Tickets add-ons for that functionality. We’d be happy to help you get that configured if you’d like to go that route.
Please let us know if there are any other questions we can answer for you.