@Melissa2475,
I only accept people with a photo. The weird thing is that I had a couple people show up who didn’t look like their photo (photo shop or something) and they could potentially put a pic of their pet or something.
A photo ID is recommended. You could also make a request to only accept good rated guests. I personally don’t have this requirement and I’ve had wonderful first time airbnb guests too (and made a good impression for their first time they used airbnb).
You just need to ask vetting questions like @Helen3 suggested. We had one guest book and then immediately cancel (in 10 min) after our thank you for booking message went out with vetting questions (so maybe we avoided a potentially challenging situation). I do instant booking but have not had an issue - many people don’t so they can make sure the guest is a good fit for your listing before accepting the reservation.