Since this is marked resolved I am going to close this ticket, but if you need anything else related to this topic or another please post a new topic on the forum and we can help you out.
We’re happy to announce you can now allow users to add Tags to their events when submitting them to your site.
Don’t worry, they won’t be able to go crazy and add 80 million new tags on your site – in the same way categories work, users can only add existing tags that an admin has created to their event. And if you wish to remove Categories and Tags from the event submission form, you can do so with simple customizations.