Just finished finding and reading this thread.
I really sympathize with the OP.
We are going through something similar in that my MIL called us this past Christmas to make sure that we "save" next Christmas for her. She wants the whole family (3 kids plus their families) to come down to TX for Christmas. She wants to "celebrate" her and FIL's 40th wedding anniversary at the same time.
SIL, who lives in TX also (the parents moved within 2 blocks of her), called a few days later to let us know that Mom has "informed" her that the parents WANT a dinner party from the kids to celebrate the event. Obviously, the 3 kids will need to split the costs 3 ways.
So, what are you going to do?
I actually feel sorry for SIL who will need to do all the work planning everything since she is the only one in town, plus chip in her monetary share.
I actually resent the loss of vacation time (DH only gets 2 weeks a year) for a family event more than the money, even though it will be a lot.
For the OP and others who thought that $1800 divided between 9 siblings was a lot, a Chinese banquet with 10 courses costs about $300-$500 per TABLE of 10-12 people. The prices actually higher for weddings. The dinner party will definitely be a Chinese banquet. We have Chinese banquets for "regular" family dinners. So, the costs for just my family of 4 would be around $150-$200. The parents will probably want at least 8-10 tables.
Aside from the costs of the meal, we will have to purchase airfare for 4 from NYC to IAH which will run us about $1200-$1500 since the drive would be way too long.
I keep thinking that we could have a very nice WDW trip with that money!
It's a big chunk even we won't starve if we shell it out.
I have a feeling the parents in law will give all the kids and grandkids "Red Envelopes" of money to help us with the expenses. But I wouldn't expect it or count on it.
It would only be fair, I guess. I threw a Chinese dinner banquet to celebrate my Dad's 70th birthday a few years ago with invitations and everything. My Dad had a blast! We supposely picked up the whole tab for 20 tables since I am an only child. But in reality, Mom helped us out.
So, we will suck it up and "do the right thing" even if it winds up costing us a few grand even without the airfare. DH is the one that is complaining more about the cost and trouble. He's not too close to his parents or family and thinks it's ridiculous to go to all this trouble. Me, I understand that family is family. We might not like it but we will do it.
Besides this splitting the Dinner Banquet thing, we have run into the split gift thing before too. We have nothing against the split gift thing at all. It's easier (for the parents who have everything and needs nothing) and makes everyone "equal" in a sense. It happens very infrequently and usually for "special" occasions only.
But one year, we were proud of ourselves for getting DH's parents' gift early. We got them a new digital camera with photo printer. Their big screen projection tv died soon after. DH had talked about getting them another one much earlier. The other siblings decided that we should all chip in and get them a new big screen projection tv. We would have no trouble doing so except that we had already purchased an expensive gift already. So DH declined to chip in and it was a bit of a mess but we just ignored it. The in-laws got their tv but I'm not sure of the details - DH knows but I never bothered to find out.