when i’m a guest at someone’s house, i will make the beds. But if i’m a guest at my parents or in law, i will strip the beds and fold the blanket and linen so that its not a mess when you walk in.
The reason i dont strip the linen by strangers is because i notice that many blankets have stains on them from prior use. I think it’d be embarrassing to the host to walk in and see the stripped bed and their stained blanket there. Besides, as a guest, i wouldnt want to see those stains!