I've a few to add, when ds1 started school it was my first experience of whole class parties & as there were 2 it was usually 40+ kids a time. Always the same child whose parent did a drop & run, they were 3 when I went but friends of mine said parents had been doing the same since before they turned 2. More often than not parents didn't know party organiser well if a t all but just expected a room full of strangers to watch him. Did the same when ds had a soft play party, mum told me at school he was coming but dad dropped him off, without speaking to me at all despite me being stood at the entrance (holding newborn ds2), put boys first name only on sign in sheet with no contact info at all & left. He then had an accident because he was climbing the outside of the play equipment & fell, not hurt thankfully but very upset & asking for mum & dad who I had no way to call. When he picked him up I explained & his answer was it happens all the time & perhaps if have found it easier to keep an eye on all of them if I'd paid to have exclusive use!
I've also been in the bill splitting situation, big work meal, me & friend being fairly young & more interested in drinking than a multi course meal have £8 pasta dishes. Get out one drinks throughout at the bar. Senior managers in attendance & on significantly more money than us are having multiple courses, ordering wine which comes no where near us. we had drinks vouchers for rest of the evening in other bars so had enough for food & taxi. Bill comes & they decide we're splitting it, we ended up having to pay £45 each (had to put on credit cards), we queried but we're told that's how it was done, should not have gone if we weren't prepared to do it & threatened with disciplinary action if we didnt (was out of work hours, no connection to the business & we were naive so had no idea this wasn't ok).
Also not sure if my MIL isn't a bit of a CF too, keeps offering to buy us things we need as gifts, always presents as it's her doing it but will then go round t o other family members to day she's decided we're getting Owner & Dh thi s so you need to give me £x for your share. There is no prior agreement or chat before she asks for the cash. Last time it happened the person she told had already got something, they were instructed to return it & give money to her instead