Hi Tyler. This isn’t doable out of the box, but there may be a way to hack it together with relative ease. Let me see if our developer Jonah has any suggestions.
This is totally unsupported but what I would suggest is using the Advanced Custom Fields plugin (http://plugins.elliotcondon.com/advanced-custom-fields/). You’ll have to still enter all your Venue’s beforehand, but then you can create a custom relationship field with ACF that’s assigned to only the events post type (will only show up for events) and set the relationship field to pull from tribe_venues to be able to select any of your venues for an event. Then you’ll need to modify the events templates to pull in that custom field data. That’s how I would do it…