I worked my socks off to prepare. I'm certainly not like GS-Alpha, who is clearly very gifted.
I did a few practice verbal reasoning examples and despite thinking they would be quite easy, realised I needed quite a bit of practice. Same with the maths. All my answers in the interview were honest, but I'd made sure I had my examples sitting in my short term memory. Having cocked up my first interview when my mind just went blank at the most inconvenient time.
As for the sim, I got myself very good at flying raw data again. My capacity bucket was quite large when I turned up for sim day.