How to split the costs

[Lights22]

Hi there. Planning to go away with in laws and bro in law's family. Let's say it costs £1000 for the week. How would you split the costs eg by room, by person or by family? Just to say I'm happy either way, we get to be together, but helps me plan my budget to get an idea of the consensus. Bro in law is tricky to have these convos with.

Mother in law and father in law (1 room)
Brother in law and 15 & 16 year old nephews (2 rooms)
Me, husband, 5yo and 2yo (1 or 2 rooms, we don't mind)

If that was my family we'd split 3 ways as my parents wouldn't want us to pay more but realise not everyone is the same!

I'd probably split by 6. Count the two teens as one adult, and don't count the 5yo and 2yo at all.

That way each "family" is paying a third.

Food wise - split food shopping by 8, with bil paying in full for the two teen lads as they seem to inhale food! With you and dh chucking in one person worth to cover the two littlest food.

Depends what the cost is. If it’s a cottage or a rental house I’d say by room so 20:40:40 (although actually my parents would insist on paying it as thirds). If it was a hotel we’d each pay for whatever rooms we booked.

Unless wildly different consumption then I’d do restaurant bills and groceries split per person (bit less for little kids), drinks I’d split by drinkers.

Activities we’d pay our own.

Spilt 3 ways in our family.

Thanks. With my own family it'd be by thirds/per household. And as PP has said, viewing the teenagers as one adult for food and splitting by adults. TBF I'd probs class my two as one adult for food bills. Different families do things differently. His is lovely but odd (aren't they all 🤣) hence looking at other ideas out there.

Each family pays a third.

Our family do this per head usually, but a little adjusted for food if one family is massive hungry teens and one is pre schoolers. So we’d do 4/10, 4/10 per family of 4, and 2/10 for grandparents.
Though sometimes if the other family can’t really afford it and we still want to go away, we sub them and split the subs between us and grandparents.

Each family pay 1/3 for house. Food split by 8 with parents paying 2/8, BiL and teens 3/8 and you, DH and 2 little ones 3/8. Or if your parents don't mind keep it simple each family pays 1/3 rd.

In our family we’d just split it 3 ways.

We go away every year as a big family
group and pay by the amount of bedrooms we need. Works well for all of us, we need 3
rooms and others need only 1.
Would feel massively unfair on those who are a couple to be subsidising our larger part of the family especially when the house is so expensive.

I think I'd rather go to a hotel and everyone sort out their own rooms.

Evening socialising hard in a hotel though with a 2yo and a 5yo. Can't leave them in the room alone, but too old to sleep in a buggy in the hotel bar.

We tend to look at what different peoples ability to pay are like and take that into account as well. So while we would have had a room set aside for one of my siblings, because they weren’t working then they didn’t have to pay anything - we just wanted them to be able to join everyone on hols.