I have to "work" the morning if it is a weekday, or take a full day's leave. It depends if we are staying at home or travelling "down home" to extended family if I want to go in or not (no issue taking leave, and generally little or no actual work gets done if you go in - but I have done important tasks some years that I've been in). If we are travelling, I will generally take it off. If we are not, generally dd comes in with me and we used to meet DH later on the main shopping street nearby to buy DD's birthday cake (for 26th) in M&S and any other last bits before having lunch together and going home to do our preparations together in the kitchen and slow down as a family. Nowadays, DH has to work also and his senior managers (overseas) have dictated a full day must be done. He closes down the office in the early afternoon and sends everyone who has been in home (as one of the senior people, and usually the only one present, he can do that) but he can't get into the city centre as a result.
For me, going into the city, doing a couple of hours wandering and chatting to colleagues with coffees, chocs etc flying around is no hardship. And I can do any last minute shopping I need to.
We have never been interested in farm, play centre, cinema trips etc. 24th, it's more doing any work/shopping needed, visiting family (sometimes), and preparing things for 25th and spending time as our own family- we're often very very busy in December with work and social and DD sports and social things, so slowing down is important for us at that stage.