I waitressed. I was good at it. I often could memorize stuff instead of just writing it down. The key is schmoozing, just like being any other sales person. I also liked being active.
I had a really hard time, though, as an NF handling the people stress of it. Like, if someone made me mad or I just got overwhelmed, it was really hard on me mentally/emotionally. I loved the camraderie of waiting tables, too, the way you can joke around with your co-workers and such.
The most frustrating part for me was working for "idiots," thinking that I was smarter than some of my supervisors...possible N prejudice there.