Thank-you Etiquette

I would bring or send a hostess gift to C and send a note to B. If B did some elaborate planning, like parties, activities, etc, they would get a gift too.

ETA: I can't imagine staying at someone's home and not giving them a hostess gift. It may be a framed photo of my kids for my Grannie or some salsa from AZ for my college friends, but I would never show up to stay the night somewhere without a little something.

Personally - I would thank the person who facilitated the accommodations as well as the one who hosted me/my family.

B and C. Everyone did something for them. Everyone needs to be thanked. And B should thank C too!

I would thank anyone who helped and especially thank the person who hosted them at their house...

Thank them all. You can't overdo gratitude, but you can make one feel slighted if you don't remember them with a thank you.

I would think that everyone who was involved needs to be thanked. I would send a thank you note to the person I originally contacted to let them know of my impending visit and asking for help. And I would thank the one who let me stay in their home.

B and C should both be thanked. They both contributed to the successful visit

Just everybody thanking everybody makes it easy. Hope the relatives aren't keeping score!

seriously? What exactly constitutes a "bigger thank you?" Can't the person just thank everyone involved with equal grace and be done with it?

People tend to overthink this stuff. An in person thank you at the time seems like more then enough for both people.

She should thank them both. One did a lot of work to make things happen, the other did a lot of work to have her home ready for guests. How she thanks them shouldn't matter and shouldn't be compared.

Both for their individual contributions.

Well, thanking everyone, is covering all your bases.
So that no one gets mad/offended, IF they are not thanked.
Its not about what they actually did or not, for SOME people, they expect to be thanked anyway.

So if you want to cover all your bases, just thank them all?

This is all family right???? Was there no sense of gratitude expressed at the meeting? A to B "hey thanks for putting this together". B to C or A to C "Hey, thanks for having everyone over."

Or when A initially called B and B agreed to make arrangements I would guess that A said thank you, at least at the end of the conversation.

This is all FAMILY right? What kind of "Thank You" do you want? Are you expecting a formal note of gratitude? Are you expecting a gift? What is a "bigger" Thank you??

This is FAMILY right??? Family does things for each other because they love each other and they want to NOT for the recognition.

Sorry I just don't understand your question.

How do you "host someone" at someone else's house?
Did Relatve B (with a small house) simply ask Relative C if Relative A could stay there on the visit? Or did Relative C simply provide beds and showers and Relative B covered food, transport, activities, etc?
Personally, I don't think you can go wrong by thanking each party for exactly what they did for you....if you're Relative A.... Sorry, a little confused by the scenario.

Etiquette is one thing, and sadly, it is less a consideration of late.
If you are B, you should thank C. It is the only thing you are in control
of. Hopefully A will send a note to B and C. As a gentle reminder to
A to express appreciation for any and all efforts involved, B write a
note to A expressing the joy of the "opportunity" to co-host him and his.
Don't hold your breath.

Too complicated. Thank them both and don't worry about who gets the bigger thank you.