My sister-in-law and my brother very rarely host events but when they do they go all out. Good venue, excellent food and drink but they exclude half the family.
Niece has a religious event at weekend. Sister and I are invited and One child each who are Godchildren. Partners and other children including niece same age as niece celebrating are not invited.
This happens all the time. When asked they say things like venue capacity and having to half number of guests to accommodate partners.
When it was gently suggested that a cheaper venue could be used brother made jokes about all popping to fast food place instead.
It’s none of my business is it? So upset though.