I had mine removed when I was 19 in 1989 - so technically an adult. They were impacted and growing sideways. I went under general anesthetic. I looked like a purple chipmunk for a while. VERY swollen face with big bruises on my jaw. Had to eat soft food for a while. All in all - not pleasant, but very manageable!
Best of luck, Indigoprint! I'm sure it will all go smoothly