We have been sent an invitation to our niece's wedding for myself, husband and two adult children mid to late thirties. Our children have lived independently for 15+ years. Eldest who is single, was quite offended by this, saying it looks like mum dad and two kids. Youngest has lived with partner for two years, will be 3 by the wedding but partner not invited to cousins wedding. What I find most annoying is the fact I received the invitation so emailed and politely said it would be best to send them their own invitation as I didn't want an awkward conversation saying they were invited but not partner. I thought I'd put it clearly but I just received a reply saying they could both come in the evening. This wedding is over 5 hours away at a chosen scenic location involving one night's accommodation for the evening but two nights if going to the whole thing. I just found this a joke and quite rude expecting someone to go just to the evening this far away. I didn't reply as I'd told them to do their own invitation. Our child has not heard anything , in more than a month since.