What does the guest registration page look like? I want to know what I'm sending people to.

It's clean and reassuring. A "Private Gallery" screen with the album name and your studio's name, then a "Guest Access — Find your photos" panel with fields for name, email and phone number, and a clear checkbox consenting to facial recognition processing for finding their photos. It's branded with your studio — the footer reads "Powered by [Your Studio]" — so guests understand they're in your delivery system, not some random third-party site. That branding detail matters more for trust than most photographers realize.