DH and I have been married for 4 years and we have spent every Christmas since with DMIL and DBIL. All at either of their places for 3 days except last year when we hosted DMIL for 6 days as she was in our bubble but DBIL couldn't travel to make it.
(We live in a one bed flat and were only able to host because DBIL wasn't going to make it).
Usually Christmas is quite tense as DBIL and DMIL just about tolerate each other. No shouting or arguing,
but a lot of underbreath comments or no eye contact to each other as they clash over the silliest stuff.
We have to sit and bear it and it's always a relief when we leave. They also visit each without DH and I, which they then complain about the other to us. DMIL is going off to visit DBIL for a week soon and she's already started with the comments of how bad it will be. We have no issues with either of them separately but it just brings the whole mood down when we're with them both. DH has said it's always been this way and in the past they've actually gone days without talking to each other.
The AIBU/NBU part is:
This year, we are thinking of having Christmas as just DH and I and starting our own tradition where we can actually enjoy Christmas. We don't have kids to use as an excuse so not sure how to broach it. Wwyd in this situation?
YABU - Continue spending Christmas with them despite the tense atmosphere.
YANBU - Start your own Christmas tradition and see them on a different day between the holidays.