Realised i may not have answered your question “One thing I’d suggest is not having that date be part of the tagline/description and instead inserting it into the template as a plain paragraph. Is that something that could work for you?”
Essentially If i had to, sure. But its far from ideal. The event date is important info that should appear on every page when the visitor glances up. But i find it hard to believe that there isn’t some simple solution…
Cheers!