Background…
Close friend has been in a relationship with her partner since last summer. There was an overlap with her and his (nearly) ex-wife, but the ex doesn’t know this and they’d been together for the kids only for many years. They have 2 children together friend has none. As you can imagine the ex wasn’t too happy that her husband had “moved on” so quickly and has been quite difficult with divorce/child contact etc.
My friend has been well accepted by her partners family and in November they invited her to a 2 week family holiday to Disneyland for this coming autumn. Holiday would be her partners parents, siblings and their children as well as his children.
His ex was not happy learning this had been booked and sent a message questioning the sleeping arrangements stating it would be inappropriate for my friend and her partner to be sharing a room with his teenage kids.
I assumed separate rooms would have been booked but apparently not due to price… so they are room sharing with his 11 year old daughter and 16 year old son for 2 weeks! Friend thinks ex is just being difficult like she is with everything else but I can kind of see her point on this one…
Am I being unreasonable to agree with the ex that this set up is inappropriate? If not how do I communicate this to my friend or should I just not get involved!!
edit to add - partners parents are paying for all flights - then friend and her partner are paying for room/tickets/dining plan etc. I would assume he is paying more than her due to the kids but she is definitely contributing her part. She’s said it would be an extra 4k to add additional rooms for the children to share separately to them so it’s purely financial reasons why they didn’t opt to do it