Hi Rob,
So sorry it’s taken a bit to get to your question, but I’m happy to help you! 🙂
So, currently, having dependencies or pre-requisites like this for purchases are not a feature of our plugin. However, I think that you might find spotstudio’s comments on this thread helpful, for how they were able to use a WooCommerce add-on to bundle tickets. That might not be exactly how you were thinking of executing this, but I think it may accomplish a similar function.
Additionally, as Geoff mentions in the same thread, we do have a feature request posted for bundled tickets, and it would be worth upvoting in UserVoice if you’re interested in seeing it as a feature in the future.
Hope this helps, & best of luck with your project!
Cheers,
Shelby 🙂