Shareable links when website is public but requires login.

I’m. Create a booking app and I need my users to sign up.

However when my users create a booking I want a custom link to be created to show a booking summary that they can share with their customer. This link has its own page but won’t force the end customer to sign up for my app.

I’ve had discussion with the AI about this but it’s a hard setting that can’t be bypassed with code. I need to make my app public with no login which I don’t want to do