My then best friend
I had 3 dc within 3 years and she had her ds (at around the time i had my no3) and 7 years later,had 2 dds within about 21 months of each other
We also had very different parenting styles
If we went to hers,I would make sure mine tided up after themselves/eat what was on offer (within reason,nobody would be forced to eat what they didnt like)/be polite/don't make a mess you don't want to clean up and just be a pleasure to host (and believe me,mine are not perfect!)
Hers had spent 7 years as a spoilt only child (I'm fully aware not all 'onlys' are spoilt,but all he had to do was point at something and it was his) had zero manners/would demand other food as 'this is shit!' while his mother stared at me to produce other foods out of my arse and as soon as it was time to leave,they'd just stand up and walk out,leaving me with the massive mess he'd made (and later,his sisters mess)
It got to the point id only host if we went to the park as I couldn't deal with a nasty brat who's mother thought he farted rainbows and could do no wrong-i remember my eldest asking why he got away with stuff that I would have bollocked her for
He once trashed my bathroom-sudocrem and shit up the walls,our toothbrushes in the toilet (hed pissed all over them),talc,shower gel and shampoo mixed into the mess,toilet rolls all over the floor and bleach (my fault for leaving that in the cupboard) all down my bath with towels dumped on top (the ones he had wiped his arse on)
He'd only gone for a wee (he was about 9/10 at the time)
I rang my friend and all I got back was 'he wouldn't have done that-yours did it and are trying to blame mine' (mine had been in the garden at the time) and I found out later that he'd done exactly the same thing a few weeks earlier with his cousins at his grandparents and got to play on the PlayStation while the adults cleaned up the mess
On his way out,he spat at me twice and his mother ignored him and walked out with him smirking
His sisters where exactly the same and she couldn't understand why nobody hosted playmates with them more than once
She was my best mate from us being 12 years old but by God,I regretted it as we had kids,she was an amazing friend but had a massive blind spot when it came to her kids