Trying to avoid a potential AIBU.
Sharing a villa between 3 couples + 1xDC who needs own room. Couple with DC happy to subsidise extra cost of the DC room. So far so straightforward.
Each couple want to stay a different length of time at the villa.
Couple 1 = 7 nights
Couple 2 = 10 nights
Couple 3 (with DC) = 14 nights
All are open to suggestion on how to split the total cost of the villa in the fairest way.
WWYD? Pro rata per room per night? Split total cost for 14 nights equally?
Sorry it's not a proper AIBU. (I can't even think how I would disguise it as one).
All suggestions gratefully received. Thank you.