Deal with the event information instead of your site's attributes. You should not repeat other facts like date and placement; as an alternative, insert that information to the respective Attributes. We completely respect if you need to refuse cookies but to stop asking you many times kindly make it possible https://addons.prestashop.com/de/seo-suchmaschinenranking-optimization/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html