I have three cousin ish things. Their dad married my aunt. But the are the rudest most devilish creatures known to man. I cannot stand them. Last time they came over for Thanksgiving the 14 year old decided to smear poop all over the bathroom because its funny. And the other two were sneaking their parents alcoholic beverages down to the kid room. They are rude, extremely disrespectful, and thoroughly unwelcome in my and FI's opinions. However I do like my three cousins that are my aunts actual kids. They behave and are very sweet. I had been babysitting them since they were born.
I want the good kids to come, but I would rather not have to invite the demons as well. And if I say none of them are invited it would be a problem since other kids (who are well behaved and have manners on FI's side of the family) are invited.
I'm torn between just straight up telling my aunt that the three terrors are not welcome because they are just that or just sucking it up. I just do not want to have to be corralling rowdy pain in the butt kids / young adults and having to keep an eye on them to make sure no child is sneaking liquor or destroying the venue.
Decisions... decisions...
What would you ladies do?