This thread makes me smile. I'm glad to find that others are playing the game properly too
As for me:
1. Only use cultures which I claim some hegemony over for recruits, i.e., if I consider myself the king of two different peoples, than I call them to arms together.
2. Develop a character's personality early on, then stick to it. Don't do anything out of character unless it genuinely is the only way to avoid doing something even more out of character.
3. Give the men a good speech before a big battle
4. No abusing glitches or anything of the sort
5. I noticed someone mentioned keeping some spare equipment hidden in his hall in case he needed it later. I do something similar, but for vanity items. For instance, my purpose-bred Greek cataphract, which I occassionally take with me to very important battles, and a few fine especially swords and rare items.
6. Even when I travel alone, I stay overnight in towns.
7. Certain characters of mine will not lead a forced march under any circumstances, although there is one who would only lead one if he was retreating.
That's all I can think of just now.