Cool project, I read through the code and it seemed thoughtful and well laid out.

To make this more accessible you'd need to offer a managed version on a cheap vm, at which point you're also managing the overhead of a VM, authentication system, etc. Oof. Obviously out of scope for a side project.

Event organizing is an art. Not just the data but managing payment processing, external communication (email, sms), and other overhead. Godspeed to the folks organizing events and building tools to make it easier.