This code included detailed rules on conversation topics, dress code, and even assigned seating determined by “optimal personality compatibility,” with the sister acting as the enforcer. When the OP refused to enforce these rules in her own home and told her sister to host if she wanted such control, the sister accused her of being ungrateful, leading the OP to cancel hosting the dinner. The OP is now facing conflict with her mother and brother, and she is unsure if she was wrong to defend her hosting autonomy.

This happened recently, and I’m still baffled. For context, I (32F) have hosted Thanksgiving for my family every year since I moved into my house five years ago. It’s always a little messy and chaotic, but that’s part of the charm, right?
This year, my sister (29F) decided she wanted to “help bring some order” to the gathering. At first, I thought she just meant coordinating who would bring what dishes or helping with cleanup.
Instead, she showed up at my house last week with printed copies of what she called a “Family Code of Conduct.” She handed these out and insisted everyone read and sign them before attending Thanksgiving.
Some highlights included: A rule against “overlapping conversations” at the dinner table, with suggestions for taking turns like “a respectful debate club.” A “ban on political or controversial topics,” with her as the final arbiter of what was too heated.
A dress code of “smart casual” because “holiday photos should reflect well on the family.” Assigned seating that she claimed was based on “optimal personality compatibility.” She was completely serious.
When I laughed and said, “You can’t be serious,” she accused me of “not taking her efforts to improve family dynamics seriously.” I told her I wasn’t going to enforce a code of conduct at my house and that if she wanted to micromanage Thanksgiving, she could host it herself.
She doubled down, saying I was being ungrateful and stubborn. I canceled hosting, and now the family is mad at me. My mom thinks I should’ve just humored her for the day, while my brother (35M) is refusing to go anywhere unless “no one tries to draft a holiday constitution.” I’m torn.
Was I wrong for standing my ground, or should I have let her run the day to keep the peace?
Conclusion
The core conflict is between the OP’s desire to maintain a relaxed, traditional hosting environment and her sister’s attempt to enforce rigid, formal controls over the family gathering. The OP prioritized maintaining her boundaries and control over her own home event, resulting in the cancellation of Thanksgiving at her house and resulting family disapproval.
The central question remains whether the OP was correct to firmly reject her sister’s dictates, thereby protecting her autonomy but risking immediate family conflict, or if she should have temporarily conceded to the sister’s demands to maintain the peace and secure the annual tradition.
Here’s how people reacted:
What about a holiday declaration of independence?
> We hold these truths to be self-evident, that all family members are created equal, that they are endowed with certain unalienable Rights, that among these are Speech, Seating and the vestiture which best suits us.
> * That to secure these rights, Hosts are selected among the Family, deriving their just powers from the fact that they own the damn place,
> * That whenever any Member of the Family becomes destructive of these ends, it is the Right of the Family to ignore or to avoid them, and to invite new Family, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Satiety and Chattiness. Prudence, indeed, will dictate that Family Gatherings long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that family members are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Codes of Conduct, and to provide new Safeguards for their future Gatherings.
The rules about overlapping conversations, dress code and seating are silly – but has there been arguments about politics or has she been “talked over” a lot?Or maybe she really just put effort into making it and now feels shut down.
Can you collaborate and find some common ground? Tell her you appreciate the effort but that you would rather focus on coordinating the dishes and cleanup like you originally thought. Channel her effort into something useful and find some ‘rules’ you can both agree on.
But at the end of the day- Your home, your rules!
My MIL has only a couple rules:
1- Food will be on the table as soon as it’s done in the afternoon. If you can’t make it on time there will be leftovers.
2- No one may talk about religion or politics.
3- Little kids may have chicken nuggets if they want them.
These rules prevent drama.
I’d just tell her to cluck off. That crap wasn’t happening at my house, and she always had an option of not coming if she doesn’t like it.
Of course, your option of her hosting was valid. I’m with your brother and wouldn’t attend any event with a code of conduct or assigned seating, but she could have it her way at her house. Sounds like she either didn’t want to or couldn’t for some reason.
I wouldn’t have canceled hosting but you’re within your rights to do so. I wouldn’t have humored her either.
If your sister was my sister, was hosting, and had these rules I’d either abide by them or not go and say why.
I will not be humoring someone who tries to create rules of conduct in my own damn home. And I stand by what I stated. IF sister wants to create this rules of conduct? Then yes. She can host. And I don’t know why you all are mad at me? Sister was the one trying to tell you all how you should act.
Maybe let your sister suggest seating arrangements that may help with the spirit of what she was trying to accomplish.
Good luck.
You’re making huge problems out of nothing.