DD wants to do a specific trip that she has done twice before but it is extrememly popular and I missed booking the tickets last year (I ration it to every second year - but when I looked for tickets in August they had sold out in July). So this year, I am looking out for the day they go on sale so I don't miss them again. It's not that expensive, but just special and magical, and DH and I enjoyed it too.
So things like that NEED to be planned in advance.
And then there are all the other things I want to have organised - it's as much about having a plan in my head and knowing about organisations to be in touch with, what their deadlines are, what their requirements are and so on.
Having a list of different activities to keep DD busy during the month (which is very busy workwise as it happens, I have some small relief over the summer). Things that are important to do - like cleaning out old broken toys, making sure we have nice clothes to wear for different occasions (not just tracksuits which she'd live in!), and giving her some time and space and the materials to make cards for her cousins and granparents. Making sure i know where there are carol services and when. And what other things we can do in the spirit of Christmas, the birth of Christ, as well as just family fun things.
All of these things take planning. Quite apart from shopping for the multitudes (large family on both sides), making sure I have things packed for travelling or have rooms ready for guests (or both!), and keeping on top of the housework (as I said, it's a very busy time at work) and having fun things for when DH is at home (he spends a lot of time travelling so I need to schedule some things for his time here).
And at the same time, I want to make sure that, despite the chaos of the Christmas season (work, festivities, organisation etc), that there is some space in there for ME - to unwind, relax and enjoy the season too. Family issues can cause plenty of traumas (it's a big one with some members being very well able to be particularly hurtful and prevent anyone else from enjoying anything fun), and I need to make sure I have time to retreat from it all. I need to make sure that we have things to keep DD occupied and also that we have a plan for everything we do and ways to leave if we are having problems (DD has aspergers and ADHD so can get very overwhelmed even at things that she is really looking forward to), and make sure I am choosing things that will be less troublesome in terms of her sensitivities to noise and light, or that we have breaks built into events so that she can go to and enjoy some of the things that most other kids would enjoy.
So if I need to work around all of those issues, perhaps you can understand why early planning is needed. Quite apart from budgeting (and while I am lucky to afford a reasonable Christmas for all, I am not made of money and need to get good value - as well as trying to get something that is meaningful for the recipient) and purchasing aspects.
But luckily, there is a great bunch of like-minded people on the Christmas board who think about similar issues. Away from the main traffic and not imposing themselves on everyone else who is not yet ready for it. While at the same time, trying to live with the spirit of Christmas in their hearts all year round.