How do you collect all the photos your guests take at an event?

I've noticed something interesting from running a photobooth business.

At weddings, birthdays, and other celebrations, guests take hundreds of photos and videos on their phones.

But here's the problem: most of those memories never make it back to the host.

Some get shared through WhatsApp, others end up on social media, and many simply stay on people's phones.

That experience inspired me to build Pixmio, a simple way for guests to scan a QR code and upload their photos and videos without installing an app.

But I'm curious:

How do you usually collect photos from guests after an event?

Do you use Google Photos, WhatsApp, shared albums, or something else?

And what's the most frustrating part of the process?

I'd love to hear how others handle this!