Meetings Before Boarding

Someone booked a boarding service with me for 5 days next month. Then the owner called to ask if we could meet in person. He arrived with the dog, and we spent more than an hour walking around my yard and neighborhood. After that, he said we needed to meet again inside my house. What do you think? My friends told me it’s really weird. I’m not sure. He said he’s worried about leaving his dog with 'strangers.'