I just got my TNA out last Tuesday!
They usually do both tonsils AND adnoids. Adults really don't need their adnoids anyway, and sometimes they shrink and disappear in some. It doesn't hurt, and they don't even need stitches or anything! If you see a little bit of blood coming down your throat, don't worry. I freaked out and the doctor told me it was just because I was healing slow and it's the scab that's coming off.
If you can, I would HIGHLY suggest coblation. It was fast, and I didn't have too much pain afterwards! Most people claim it's like 'one case of really bad strep throat' but mines wasn't even that bad. Hope this helps. If you want to know anything else about it, just message me