We (my family and MIL) only ever see BIL and his family when they want someone to look after their kids. We've recently moved to a new house and BIL called up the other week to see if he and his family could come and visit in July. We will be on holiday that weekend, which seemed a pity as we thought they were proposing a weekend together. Yesterday MIL called to say the reason they wanted to stay was because they are going to a wedding nearby to which one of their dds is not invited. She wanted to know if they could all come anyway, including MIL, and she would look after their dd while they are at the wedding. I want to say no. They've never been to see us at our house so I don't really see why they should come when we are not there - to say nothing of all the extra bed changing etc when I get back from my holiday. I don't see why they can't take spare dd to MIL house (about 50 miles out of their way). Am I being unreasonable?