I probably am.
We're going to London for boy's birthday treat at half term. Booked two nights, so we're there for one whole day plus two half days.
Planning on doing museums, mostly - boy is 8, never been to London before, and is very keen to go to Natural History and Science.
MIL has decided she's going to come and meet us while we are there (she lives a couple of hours away in the other direction from us). I think she means just for a day. I'm hoping so, anyway.
I am not keen, although I like MIL and we generally get on well she is a "faffer". I have a plan for our brief time in London, and that doesn't include hanging around waiting for her at stations or dithering about in cafes.
I'd never presume to invite myself along to someone else's holiday.
I can't say no though, can I.
(just for the record I'd be equally irritated if my own mother decided to do the same thing).