Good evening Ryan and welcome back!
Thank you for reaching out to us.
I would love to help you with this topic.
As it turns out, this feature is planned, as you can see here: https://tribe.uservoice.com/forums/195723-feature-ideas/suggestions/8391186-reminder-emails-for-x-days-before-event
Please feel free to cast your vote and add your comments too.
For the moment, I can tell you that some of our users have managed to get this to work with third-party plugins such as https://woocommerce.com/products/follow-up-emails/
The other solution would be to export the CSV list of attendees and program a campaign in an external platform such as MailChimp.
I realize this is not ideal, but it could be used as a workaround until we release that feature.
Best regards,
Geoff B.