That stinks! Those are the kinds of things that made me stop planning group things. Before money is required, everyone is all in... after the nice guy(fool) which was usually me pays/put it on my credit card, is when people's plans seem to change. Trying to be nice and making it convenient for others just causes problems, rift friendships and such. These days I make plans for a group and pay, only if I'm willing to eat the cost of the entire activity. I've been burned too many times before with lodging, parties, concert and airline tickets. I think the people who originally planned to go should pay their share. Like pp said, collecting money upfront would work better and it separates the people who actually are serious about going and have the means to go, from the one's who just would like to go. It's unfair to just bail out and leave one person with the bill. Knowing the people you're planning for VERY well helps too. Some friends/family are more reliable than others. It would be nice if the ones who are going, help pay for the higher cost/share of the unit. Chances of renting out such a large place with late notice is small. Maybe you can talk to the owner of the property and see if you can cancel with just a 1 night penalty. Not sure how much you're paying, but it might save you some money if you move to a smaller villa. Sorry about this situation. I can see why your head wants to explode. I'll take cover.