As with most surveys in LO, you can create a Group based on Survey Responses for questions included as part of Event Registrations.

The problem is that these groups do not dynamically rebuild / refresh after each ticket purchase.  When you are leveraging these groups as part of email distribution and they cannot be configured to be "rebuilt".

We either need the ability to have email distribution rebuild these groups or we need the membership to be updated automatically each time the survey response is submitted.