Multiple dates and venues for one event

sorry this is not possible at the moment however maybe you can try to use custom events attributes as a workaround – https://wp-events-plugin.com/documentation/event-attributes/

This would be a helpful feature. Because without the possibility to have one event happening more than one time I always would need to add a new event with the same description. Is there a possibility to just copy an existing event and change date and venue?

Sounds like you might be able to use the Recurring Events feature for this.

Alternatively, there’s a Duplicate option for normal events.