That family...

I've noticed that some of the people of a family that lives across the street from my grandmother gets back to their home really late in the night. Almost 10:30-11:00, I know because I hear their car parking. But, it's not like they're disturbing me or anything, it gives me something to listen to as I wait for my brain to allow me to go to sleep after I've already had my eyes closed for the past hour.