Inviting non married significant others

There are cultures all over the world were the people that attend are only the family or like family.

Yes, but unless she belongs to one of those cultures, it's rude to leave out half of a couple, especially her sisters' SOs.

*all weddings are not the same*

View Quoted Comment While I agree, I usually go back to the OP's post in these. it seemed like they were requesting advice on whether people at large thought this was rude. The majority seems to be - yeah, it's pretty rude.
If you're in this situation, and you know what you can afford, and you know that your family is going to respond just fine to not inviting significant others -- you probably aren't going to post to ask people's opinions in the first place.
I do respect posts when people ask for only encouragement or only positive comments vs input or criticism. This didn't seem to be one of those, so I provided it.

If 20 people is all you can afford, then my biggest suggestion is to find a way to include them. It is rude not to.


If it’s all you can afford, fine, just be prepared for some ruffled feathers, because it’s rude.