I understand that you feel overwhelmed.
There is so much you are having to do on your own.
This is the time to call on friends.
Or to hire help.
A baby sitter or a mothers helper.
A house keeper
Maybe ask other parents to pick up your older children.
Let your children you know you need help.
They can help with the laundry. Teach them how to separate the clothing.
Teach the 8 year how to put them in the washer and the detergent.
Get them to put things in the dryer and how to fold.
Our daughter used to love to match the socks. She had a little grocery cart, she would roll it to the different bedrooms with the folded clothes.
We ate off of paper plates when I was working full time.
I tried to make one pan dishes (chicken fried rice, fideo, arroz.. I will send you the recipes..
.. Or make double recipes.. Or crock pot meals. Many times, I tried to freeze the left overs so we could eat them a week later or 2 weeks later.
Sometimes, we just had canned soup and grilled cheese. Or omelets.
I would let our daughter "help" break the eggs, look through the fridge for the things to put in the omelets. She would make the toast.. French toast, sandwiches..
For the birthday party, do it very simple. Or plan it for when your husband is back in town.
Birthday cake and juice boxes.
Have few games and do not worry about goodie bags.
Again, get a friend to help you with this.
Consider skipping the 10 hour drive for the holidays.. That is just too much stress for all of you. Instead see if you can find others that do not have family in town and you all get together.Maybe you make the Turkey and have pot luck or a sign up sheet for the other dishes.
Or find a family restaurant to eat out at. I noticed a place here in town is selling a whole turkey dinner for $39.95. All you have to do is pick it up that morning. ..
We have actually done this before when I was a child, my mother had been hit by a car. She was fine, but my dad did not want her cooking. Everything came in a big box.. We just heated it all up.
It was kind of fun not having her slaving in the kitchen and having the stress of driving all over the place.
We played games, we drove around to look at the lights the city had put up..
Maybe go to the movies.. I think the Muppet Movie will be out by then,.
Make things easier on yourself.
Children do not need "activities" . They just want time with their parents. So read books together, play some games. watch a video in the dark like a theater. Make smores.
Consider camping out in the living room one night.. Make palettes on the floor...(2 year old may do better with a normal night routine).
Just do your best. You can do this.