Out of interest, when do planners begin "planning" for events, birthdays, Christmas? I usually begin to think on what may perhaps need to happen at the day before. Except a few food items I regularly advance make, yearly, for certain meals or seasons - I do no plans longer than the day prior.
We ask our daughters to each select their Christmas date, to be with us, by talking at each other to select the 4 days. Prior we drop their gifts off to their homes, all on a quick drive - no time wasted.
Of course I buy tickets a few weeks prior to travel, that's not what I'm asking. Travel is a fun process compared to just events or holidays.