I arrived about 15 minutes later than the original reservation time, and I don't know if it was because it was a one-person hospital (I haven't been to other one-person hospitals), but they said I might have to wait about an hour longer, but I waited because I came from a rural area and really wanted to receive it. I actually waited for almost an hour.
The director wasn't unfriendly, but his tone was firm.
He said that he would do it according to the line he wanted.