I'm 21 and was cercumcised 6 weeks ago.
The penis will be bruised and swolen for a good week in which you will prob have to keep changing the bandage in that time. You won't need to but if you don't want blood on your clothes it would be best to bandage up. The stitches took a good 3 week to desolve or was safe to pull out. The penis head was extremely sensitive on boxershorts for a good 3 weeks also. When I went out I bandaged it up so it wouldn't rub on my clothing. 6 weeks on I don't feel my penis rubbin on my clothing anymore which is great. I could masterbate 3 weeks after the op.
You would need a good 2 week or work or school. Also preventing erections would be impossible and when you get one within the first week the PAIN is crazy so be carefull in the mornings and not to rush out of best with a erection on because you will tear the skin as I did but its healed up ok.
6 weeks on and I am due to go back to the urologist for a check up. Every thing is ok I guess. Underneath the penis head were the banjo string was its still a bit swolen.
Its a small operation and you will be home the same day as the operation unless you have any issues. I had to say in over night because when I went to leave to go home I started to bleed heavily from the penis and had to go back in the theater room for them to zap some blood vessals and add more stitches. I was home the next day.
Good luck.