Two years ago my parents said they'd come to us for Christmas Day on alternate years, that year they stayed with us until the day before Christmas Eve and then to friends.
We felt that it was just too much, that we hosted twice as on Christmas Eve DH's family arrived for a few days. We couldn't do any last minute shopping etc as parents were here, they don't lift a finger so by Christmas we were exhausted and felt we'd already done it all once. So at some point in the new year I told my mother that it didn't work for us and that they were always welcome to come for Christmas, but sort of come for Christmas or don't come at all.
Last year they came for Christmas Day so I've been wondering what they were planning to do this year, slightly complicated by them moving even further away from us. Yesterday DM mentions Christmas in passing on the phone, so I asked what she was planning. She said that they were spending the day with the friends and coming to us just before again, so I reminded her that we'd said it didn't work for us which she claims to have forgotten. She asked why and I explained that it was too much doing Christmas twice and hosting etc but she just said well you don't have to do a big meal we'll fit in. I tried explaining that we really didn't want to do it, but every reason I gave she just batted off.
DH and I really don't want then to stay in the run up to Christmas, they are hard work when they're here and we'll be busy doing shopping etc. I thought I'd been clear after last time but she doesn't seem to be taking no for an answer. They're arriving to stay for a few days on Sunday so I know she's going to force the issue. How do I stop myself agreeing to something I really don't want to do?