New next door neighbours moved in a few months ago, with 3 kids, one lower primary and two preschool, nearly school age. Our houses are both set back from the road and the driveways are next to each other for a few car lengths before reaching the road. Our house is further up a little hill than theirs, so the driveway is much longer and fenced the rest of the way up until it opens out into the parking/garden area. Because of the angles of the driveways and houses, the kids are totally out of sight of their own home once past the first part of the driveway, with fences and gardens inbetween. The parents would know where they've gone, they are very loud. Although we have met and say hello, etc, we don't know them well.
From the start, they have been using the end of our driveway daily, positioning one car near the end on theirs, and leaving space to go up around it by using our driveway instead of moving it. Now, the 2 youngest kids have taken to running up and down our driveway, top to bottom. They will run past the living room windows and stop at the top to look in through the front door (which is open to get some fresh air in, most days). I've already spoken to one of them ( the other ran off when I appeared at the door!) but it still continues. In addition to not wanting strange kids running past our parked cars into the garden and peering into the house at random times, we have 2 very nervous rescue cats, who are being scared out of going into their own garden. (I don't know if they were mistreated previously, but even the postie walking to the door is enough to send them running, as is heavy rain on the roof!)
It seems strange to me that the parents think it's OK for their kids to regularly run up to a relative strangers front door and look inside, when it's in no way shared property. AIBU in wanting them to stop, or is this actually a thing that people think is okay?