Did anyone else's Christmas eve devolve into a total sh*t show?

Update: Thank you everyone for the solidarity and encouragement. We all slept good and woke up feeling much better. Santa came (of course) and the kids had a blast. We are enjoying a chill day at home playing with new toys and in the backyard. I hope everyone who was or is having a rough day feels better soon.

My family (me f, husband m, kids 6.and 2) spend Christmas eve at my mother in laws. My husband's family is super complicated with a step dad who neithermy husband or I can stand. So I've been stressed for weeks about how it would go with step dad. Turns out that went fine, but my kids got so hopped up on sugar and junk food that they were falling apart on the ride home. My husband was so stressed from all the stuff with his mom and step dad that he didn't handle it super great and I'm just so tired from managing everything. My kids both went to bed so upset. I told them over and over again that Santa will come and we will have a new day tomorrow and we will all feel better after getting so upset. I just feel so awful that this night before Christmas that they have been counting down to went so sour. My husband and I should have handled it better. Now the kids are asleep and I'm getting everything set up for Christmas morning feeling like garbage. Thanks for reading. Merry Christmas.