Live in village about 10 mins walk from DH's B + SIL. They spend most of time abroad but BIL comes back regularly to his house: 10 mins away from us.
Despite having home in village he turns up almost everyday "to play the piano" [he has an electronic keyboard in his home] and then expects to stay for supper. No warning at all. Just turns up. If door not locked he just walks straight into our home. Has adult daughter and son with families living locally.
When he needs a wee he goes in our drive (we have 4 loos in the house).
AIBU to want to stop all this?