I hate my brother and sister-in-law!

The holidays are not even here and I'm already stressed about having to host Christmas! My brother and sister-in-law are in their 60s have no children and no other family my husband and I and havethree children. My family moved in with my father-in-law who had early stages of dementia and then offers stroke we had to move him into a home which was agreed upon with all the siblings. Their mother passed away two years ago. And ever since she passed away they treat me like their mother even though there's 30 years difference between me and his siblings. I have to cook and clean up after them they don't do anything for themselves and complain if I don't cook them breakfast every morning. I try to tell my husband how annoyed it makes me but he just wants his siblings here at Christmas Even though I have my own kids and my own family traditions that I would like to share with my children. And they're extremely rude to me when my husband is not around. I really need some advice I have tried everything from just getting drunk to just hang out in my room alone but then I'm not around my children and that is even more frustrating please give me some advice!