My denom doesn't recognize Christmas either. Chances are good the sermon will be about Luke 2 that day and we will sing Messianic Psalms. Kind of like what is done for Easter. And Thanksgiving. Our church does have a yearly Christmas party a few weeks beforehand, including carol singing. It's a bone of contention for some people though. One lady set a ton of Psalms to Christmas tunes... not kidding.
We always pack up and go to another church for Christmas Eve to get our Christmas service "fix." Funny, we have run into a decent number of RP people there over the years
Our tree is up but I have NO presents ready to go
Thank goodness for Amazon Prime!