Family dropping in

Hi! I had a quick question and I know similar topics have been discussed so I apologize if this is repetitive but could use the help/info!

I’ve worked with this client before, have for a few years and they’ve always been communicative and friendly and have tipped well too which is also nice. I have an upcoming visit soon and they had reached out to me today saying an in law and their (the client’s) kids are dropping by while I’ll be there (they did provide a specific time which is nice to know it won’t be random) to grab some stuff I’m assuming for the trip they’re going on but I don’t know for sure. I’ve heard mixed things about people dropping in during visits like this, some people say to never let it happen and to avoid a job if this is the case and some people just shrug it off. I don’t care too much personally, outside of it being slightly nerve wracking just because of my social anxiety and feel pretty comfortable with the dogs since I’ve looked after them before.

I mainly just want to make sure there isn’t some Rover policy that’s being broken by them dropping by? I wouldn’t think so but sometimes I hear of a policy that doesn’t sound right but it is a policy of theirs so I just want to make sure I’m not missing anything. Any help/thoughts on this would be greatly appreciated, thank you!