Depends on the situation, personal energy level, who I'm RPing with and the effect my RP will have on the other Characthers.
Example: my Characthers is generally a decent cook. However unless I'm actually teaching in RP or feeling like showing off I generally glance over the cooking RP with a couple lines at most. Sometimes if it's a pretty small RP with folks I know, I emote *and he cooks*
Compare that to an RP I had a while back during your event with my temp Halfling. I had to go into greater detail than I'm used to because one I was around different folks who don't know my RP style also , after being poked my @
Michcat and remembering this was important in that situation I RPed my characters stances and positioning in much greater detail.
4-5 lines of positioning and detail compared to 4-5 words.
Edit: should mention general rule of thumb if your doing an action that can have negative effects on others, more description is your friend. If you make a plate of normal cookies I think most folks will be fine and give you some leeway there.