House guests for 3 weeks.

[Citycentre3]

How would you cope with this? Genuine question, feel like I am cracking up with another two weeks to go. I also have a 4 year old and 1 year old to look after.

Who is staying with you for this long? I assume in-laws and I hope they're pulling their weight and not expecting you to wait on them etc... they should also contribute to buying food for the duration of their stay... frankly I wouldn't want to stay in anyones house for that long as I'd think I was intruding or disrupting their routine... I'd prefer to stay in a hotel nearby and call to visit them instead...

Who are these people?

I have been with my DP for 12 years. I always knew he had an older brother, but was told that because he had a very controlling wife they had no relationship. His brother had two DC's which he had never even met previously.
About two years ago his brother called him out of the blue. He had just separated from his wife and was reconnecting with his family again. He lives abroad so they did a lot of facetiming and DP was happy to be back intouch with his brother. There was a lot of talk of him coming to visit, as it happens he was unable to get time off work which I was happy about. However he thought it was a good idea to send his 18 year old daughter over so she could get to know her Dad's side of the family. I did express my concerns and told DP I thought the situation was a little odd, but he thought it would all be fine.

I was under the impression she was coming by herself for a week. As it happens she is actually here for three weeks and she has brought a friend with her. DP had agreed to this but never thought to tell me as he said he knew I would be upset.

1 week in and I just feel that it is all too much. His neice seems perfectly ok, but her friend is moody and demanding, requesting specific meals, huffing if my 1 year old trys to interact with her etc just generally difficult. I just feel that there are not many people that would be happy in my situation, and just feel very disgruntled that and I have two more weeks of this. I just want them to go home basically.

Maybe encourage (order) them off youth hostelling for the next week? After all, they can't come all this way and just see a Citycentre (see what I did there?).
If they demurr 'to be honest I thought you were coming for just the week so it's rather inconvenient'

Since niece is OK, have you or DH asked her what's up with her moody friend?
Does friend want to be there? Is she always like this?

Send them off for a few days sightseeing in London or Bath.
The fact that your DP didn't tell you because he thought you'd be upset is a whole other matter.......

Wow! Your DP is a peach, isn't he?