Canned summary: ex threw a big party for DD (7), lots of guests (all "being a pressie", which I don't agree with), loud venue, lots of food etc.
No problem there, except the kids spent a fair bit of time outside with me because they were overwhelmed, and it was too hectic/noisy for them. Me too, TBQH.
However, all good. After, I got "since this has cost me £xxx, I'd appreciate a donation", which rather leaves me torn. It was a birthday, they're mine too, but none of this was run by me, or in any way involved me... So there's a part of me shouting "WTF?"..