Sarah-
Jessie told me not to sneeze, cough, laugh, yell, or whisper at all during the first 7 days when things are still healing. Dr. Kim says that it's a partial heal in the first 3 days, then a full heal after 7. She encouraged the whoosh thing if I felt like I was going to. A few times though, I just couldn't help it... Then I would have severe anxiety followed by a brief feeling of depression as if maybe I had screwed something up. Luckily, Jessie was quick to respond and tell me that everything would have been okay. I didn't have other people I could share the experience with like everyone will from now on. You probably won't experience much anxiety at all with me & Abby here to reassure you. Lucky!!!

I found that having a water bottle with me at all times to take small fast sips seemed to help a lot.
Anja-
The numb tongue is temporary, Dr. Kim said nothing about a risk of permanent numbness. I think Kiwi's issue is most likely related to the nurse staff because I honestly could not imagine Dr. Kim being mean about anything. He is very gentle with his hands and his words, and in comparison every doctor that I've met in the US seems to have an "I'm a badass surgeon" kind of attitude.. you can just tell they love being rich. Granted, it's not like I've met that many surgeons in the US but that has definitely been a common observable trait. It was obvious to me that Dr. Kim understands you are coming to him for the best possible voice- and that's exactly what he gives you. No way can I picture him being in it for the cash or freaking out about payment.
I as well wished there were more english speaking examples on their youtube, and it was a bit of a worry for me going into it. Maja's voice sounded so perfect to me though, and all the non english speaking examples sounded pretty good to me as well. I guess I took a little bit of a risk, but hearing Maja's voice was enough to give me the confidence I needed. Without her interview video, I probably never would have considered this surgery enough to actually do it. Everything is on their youtube channel, apparently it is hard for them to collect post op recordings from people. And also a lot of people do not wish to be featured on the internet in any way for privacy reasons.
As far as other research, I kept finding little blurbs here and there but it's been so long I forget where I found it. There really wasn't much, and that's also what convinced me to try to thoroughly recite my experience and recovery. There's not much information about it elsewhere yet- that I know of at least! I scoured google searches and youtube for a few months and then all of a sudden I was in Korea having the surgery