So we are staying with MIL ahead of a family get together in a holiday park later this week. Only a couple of nights because MiL has various eccentricities and staying with little kids can be quite stressful because of them. Her house is very cluttered with her inability to ever throw anything out. Yesterday evening we had an argument with my husband because I asked him to turn off the WiFi router overnight. It was warm to touch and connected to power through an old extension lead, which had lots of other things plugged into it as well. The problem is, apparently, that if you turn off the WiFi, a landline phone next to her bed in her bedroom upstairs, would start beeping. My husband had turned it off on our first night here, and apparently she had told him off yesterday morning because of the beeping. I told him to turn it off again last night, as I am very big on fire safety and one of my three kids was sleeping in the top bunk so I wasn’t going to take any risks. He told me he would rather not, because of the beeping. He agreed to plugging it straight into mains, instead of the extension lead. I then checked for fire alarms, and realised one of them (upstairs), was pulled out of the ceiling and the downstairs one had no batteries. Both look like they are from the 1980s. I put my foot down and told him to either creep in and take landline away from mum’s bedside (she has a mobile so she would have access to a phone overnight), or to turn WiFi off. I’d turned everything else off eg TV and tried to do washing machine but it didn’t have a safety switch and the didn’t manage to get into cupboard due to clutter. I am super safety aware because it just takes that one night when something sets on fire, and with the amount of clutter in her house, it would have awful consequences. I would have no qualms about going into my parents’ room to get a landline away and having to explain if they woke up, but my husband’s family don’t even wear pyjamas in front of each other, so entering his mum’s bedroom completely freaked him out. I told him I wouldn’t stay again until he would help her fix her fire alarms. Was I unreasonable?