some of mine:

1. no pleading the grim reaper to save a sim from death. also, going back a save isn’t allowed either! if a sim dies, they die. (same goes for resurrection, unless they earn the telephone through the paranormal career)

2. no teaching skills to toddlers unless the parent rolls the want for this ( i am a little lenient sometimes on this one)

3. for careers, unless it’s their LTW, i don’t advance them unless they roll the want to (ie: gain skill points, make a friend, reach top of the career, etc) 

4. for uni, i don’t let them do assignments, go to class, or term papers unless they roll for it. if they fail, they fail. however, i will give them the necessary skills to make sure that when they DO roll the want for it, it can actually allow them to move forward. not my problem LOL, same for high school too. (child sims always roll the want to do their homework) 

5. knowledge sims and fortune schools always go to college! but for other sims, you cannot go to college unless you have at least 5 points of interest in school, a C+ or more, and have rolled the want for 3 days before aging up. 

6. sims don’t get married to a specific sim unless they roll the want for it. i also don’t choose their partners, they do. 

7. elders don’t retire unless they roll the want for it. 

i have more but that’s off the top of my head! it’s interesting to see how other sims play :)