I totally agree that the OP should not be treated as a doormat, but staying home because the circumstances are not perfect is really cutting off your nose to spite your face. In the long run the OP would end up as the loser and her DS and DIL would see no difference between her and the ILs. The world is not perfect and adjustment is necessary. If she is more relaxed about the situation and keeps a happy attitude, she will be more welcome.
My own DS and DIL have a new baby and are also quite busy with their careers. I try to make myself available at their convenience because it is easier for me to do. DIL's parents are divorced and that often causes upset, but my DH and I just try to be upbeat and pleasant and we ignore the rest. Things don't always work out the way we prefer, but we do have a good close relationship with our son. We are often together with the ILs, but stay pleasant and upbeat and don't get involved in their drama.
To schedule some alone time, I set a 'date' with DS and another with DIL. Once a year I take each of them out to dinner alone and we have a great time. I schedule it at their convenience and not at any holiday time.
Drama. She had a lot of kids and has empty nest syndrome. I can understand that. But there comes a point when you have to get along with everyone or stay home and wallow in it. My SIL's all feel the same way, it doesn't go unnoticed. We all try to please her. She is a great person otherwise, but when it comes to sharing holidays, it's 'drama all the way'. ( Instead of 'jingle all the way' )

You should commiserate with this DISer, since your holiday plans sound similarly ruined:
EdiePA
http://www.disboards.com/showthread.php?t=1983513
Maybe you two can compare notes. Or, at least, you know you are not alone.
I don't believe it is. But this is CHRISTMAS - I would find it hard to turn away any of my family that wanted to see me on Christmas. (unless it was really a horrible person "axe murderer" that I never wanted to see).Why is it such a crime for OP to want to spend alone time with her son and DDIL?
Allowing what exactly? Maybe the DDIL wants to see HER family for the holiday? Why does it have to be one or the other? Can they not just suck it up and get along for 2 days? Obviously the DDIL's family likes the MIL. That is why they probably figured that the more the merrier. I know we do it that way. The OP doesn't like anyone. Everyone else seems to enjoy each other. I think the OP needs to decide what is more important to her. Seeing her son and his family or being right.Not pretending, but I don't think OP should be the doormat for DDIL's family at every turn. If I were OP, yes, I would cut my nose off to spite my face, and stay home. If you let someone walk all over you, it becomes habit. I think this is completely disrespectful of DDIL family and DDIL for allowing it.

Maybe she is still figuring out how to explain to us why she posted the same story, but under a different name. That's my guess. Wherever she is, I hope things work out for her.Where is OP??
Not pretending, but I don't think OP should be the doormat for DDIL's family at every turn. If I were OP, yes, I would cut my nose off to spite my face, and stay home. If you let someone walk all over you, it becomes habit. I think this is completely disrespectful of DDIL family and DDIL for allowing it.
sorry, I was at work and don't log on with my EdiePA account because of nosy co-workers.
I'm not asking for an exclusive all-or-nothing time. I already changed my plans for the in-laws and moved my time to only Christmas Day and the weekend. (And it didn't have to be Christmas Day -- but that's when my son wanted me there.) The other in-laws already celebrated Christmas with the kids on Thanksgiving -- this trip is just "gravy". When they 1st said they were coming, I moved my plans back to accommodate them and give them more one-on-one time with the kids. Then, they weren't coming and now they're coming exactly when I am.
I have a job. I can't just "change my plans" -- my vacation time had to be put in four months ago.
It's not that I dislike them -- I dislike the drama and yes, it's adults who cry when someone doesn't want to go along with their plans, slam doors, etc.
So, to all who gave me some perspective, thank you.
Edie
Oh, and no I'm not exactly thrilled about the grandchild. Her mom is sucking all of the excitement out of it -- she's already pressuring me as to what the baby will call me and I am not to come the first two weeks -- that is HER time.
If so is the other post about the same thing you also?

Sorry but I agree with OP and these other posters. Why is it such a crime for OP to want to spend alone time with her son and DDIL? She's already gone out of her way to accomodate her son and DDIL by going to see them, as well as coordinating with her parents, but somehow everyone sees her as the bad guy? These plans were set and everyone had agreed. If the "kids" decide to change things next year, then fine, but I think it's rude and disrespectful to always expect one person to make all of the concessions. I think if DDIL were a good DIL she'd stand up and tell her family they'd have to wait. The world doesn't always revolve around one family and their whims.
Oh, and no I'm not exactly thrilled about the grandchild. Her mom is sucking all of the excitement out of it -- she's already pressuring me as to what the baby will call me and I am not to come the first two weeks -- that is HER time.

The first post was about having to forsake half of my vacation because the in-laws were coming.
Someone earlier in the thread posted a link.
E.