I'm super accommodating to my in laws when they want to see my kids.
I never say no and I always let them do what they want with them. They often show at inconvenient times, like 6 pm and they usually want to take them to their house.
I always accommodate even when it's not convenient.
Today MIL wanted to see DD and I asked her to come over, which she initially agreed to and then said ' actually I've changed my mind, can you bring her here instead'.
I replied saying I would rather DD stay home today as she's under the weather, which MIL knows.
I know MIL won't be totally happy but it's fine to sometimes not say yes to do it exactly how she wants, right ?? I'm a bit of a people pleaser, if you can't tell!