I'm late to the thread but here's my thoughts-apologies in advance for the long post:
My sister became enraged at him because she wanted to "release" the baby photos on Facebook herself,
Well I actually do understand her feelings on that. The thing is on engagements, births, deaths, etc there are just some things out of respect that you wait or ask for permission first.
she didn't think he removed the photos quickly enough after she complained.
I did see that you said it was later that day. Unfortunately with FB unless you delete something very very quickly after posting it other people can see if (heck even instantaneously they can see it on their News Feed).
This resulted in my brother being shunned from family events (which are mostly held at her house) for about four years.
Now that is pretty outlandish. She can sure hold a grudge. I would have been upset but would have eventually worked it out...it would not have taken 4 years by any means though.
My sister is really angry about this.
This is a recurring theme in your comments. Why is she sooooo angry. I get controlling but I'm not generally around people who are angry at every little thing. Annoyed, whiny, rude, etc sure but angry at any hint of something not being their way...there's more going on to that. Maybe she needs to set up with a counselor to work on that honestly.
I see my sister and her family on a weekly basis, as my son and I travel to her home each Sunday. It's important to me to keep family relationships strong for the sake of all the kids.
Yeah...look the thing is keeping family relationships strong doesn't mean seeing family members all the time and it doesn't mean you should have to put up with verbal abuse or controlling behavior like that.
I don't love my grandmother any less than my husband loved his grandmother even though I see my grandmother a lot less than he saw his grandmother when she was alive. Don't equate spending every week seeing each other as the only way to keep relationships strong. A bit of distance is good for a lot of people for a variety or ways.
the rest of the family put in the position of having to do separate Christmases, Thanksgiving, etc., because she wouldn't be at a holiday event where he was.
Here's my honest opinion-your family could have done the holidays elsewhere and said "if you want to come come if not don't" Unless your family had an issue with your brother I don't see why they would choose for four years to not include your brother even if that meant possibly excluding your sister-sometimes tough decisions have to be made and in my viewpoint it's unfortunate the decision they made for 4 years.
I feel for your brother because while your family was put between a rock and a hard place for 4 years he sat and watched while his family basically kowtowed to your sister's demands of her being there or not.
My brother was angry at the time he was being shunned, but now is happy to be back in her good graces.
I understand his anger in this situation but your second part of your statement I would have issue with.
Today, after talking with my sister, he called me to try to tell me to stay at their hotel & not get a rental car. I told him my plans were set, and he wasn't happy.
My brother called again to try to get me to change hotels, despite the fact that I already told him the B&B I'm at is nonrefundable. They don't care about that. He also tried to get me to agree not to rent my own car, again, being extremely pushy & not taking no for an answer.
Well sure that's understandable. He doesn't want to rock the boat, he doesn't want there to be strife, especially given his photo issue several years back.
I was never given any choices about this trip. I was told where I would have to stay & how, without any input from me even after I had requested in advance to have input.
But I think you probably already knew, based on a lifetime knowing your sister, that you would probably get very little input on things. I do agree with another poster that your sister is taking on the bulk of it and that's fine but
Well, I'm not bending over and I have this thread to show for it...
That might be the reason why.
There's a difference in taking a stance in some things but bending over in the grander sense. I applaud you for providing a reasonable solution for wanting a different hotel (that you would be getting yourself to their hotel and they wouldn't have to worry about it) and on your dime but I do think that in many other facets outside of the present issue of settling up the accounts you probably see it easier to keep the peace as much as possible. Not that I don't understand that but me compromising on certain things doesn't mean I give in and let someone else dictate so much of my life. I'm sure it's exhausting always feeling like you need to do things the right way in order to not incur her wrath.