Hi Atticus,
Thanks for reaching out!
Unfortunately there is not any review functionality in place currently, but this sounds like a great feature! We would love it if you would post this in our Feature Ideas forum, which is what we use to gauge user interest in new features and help guide development efforts.
For now, there is a setting to allow comments on events, which you can enable by going to Events > Settings.
Please let me know if you have any more questions!
Thanks,
Jennifer