We have similar events where the description and instructor are the same but the date and locations change.
I know there are recurring events where you can have non-pattern series and break out events, but that doesn’t seem to address when there are several fields that need to change.
We don’t offer a solution for quickly duplicating events outside of the recurring event options. But, you could check out a 3rd party plugin that we do not officially support: https://wordpress.org/plugins/duplicate-tec-event/.