Went to my mothers home country. We have family there but it was the first time DH and two DC (who were 7 and 4 at the time) had been there, so it was a special trip. We went with my mother and her DP (he is from the UK, as are we).
My mum's DP's behaviour was horrendous throughout the trip. A summary:
He insisted on fitting the child seats into the hire car (he has never had kids) and got angry with me when I refused to let him drive off with the seats fitted incorrectly.
My godmother and her husband arrived to the holiday home with very generous gifts for us all. When they were out of earshot he said to DH and I that he just wished "they would leave the gifts and piss off". It was then it dawned on me that he had no interest in seeing my family.
He left a citronella candle in metal casing directly on a deck board in the holiday home and it burnt a circle into it, then asked my mum to call my godmother and her husband back to help him fix it.
Micro aggressions to our 7 year old son all holiday including giving him the silent treatment, shouting at him for not eating his dinner in a restaurant and clipping him purposely with a pull along suitcase. DS has now been diagnosed ASD so has always struggled with food etc.
Was sullen during a lake trip and then walked ahead and got DD changed out of her wet swimming things before we got there (she was aged 4 at the time). As I said, he was not a parent himself and it felt very alarming that he was so simmering with anger with us yet felt the need to get a small girl changed instead of waiting 5 min for a parent to do it.
We went to stay with a family friend and her family who kindly moved out of her apartment in the city to let us stay. He screamed at her in the car as she was chatting and he didn't know where to park.
Went to a cafe (but like a petrol station type thing) with same family friend and her DH. He presumed they were paying for all our drinks and walked off at the till, when called back he caused a scene.
Marched us angrily through the city and would not slow down for the children, we were having to carry them and rush along behind him as best we could.
Hissed at my mum who was pretending to have a back ache by this point.
My husband wanted to have a row with him but I was scared and worried about a ruined holiday so I didn't let him (I used to be a people pleaser and was scared of him)
Am now NC with him because of many other things too and as a result have barely any relationship with my mum.
It was a horrific holiday!